2020 Gmc Sierra 3500 problems
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Common 2020 Gmc Sierra 3500 problems
The 2020 GMC Sierra 3500 has been reported to have several common problems, primarily related to the electrical system, brakes, and engine.
- Service Brakes: The National Highway Traffic Safety Administration (NHTSA) received a complaint that the antilock braking system failed while driving, causing the brakes to lock up, the truck to spin out of control, and jump over the center divider of the road and into oncoming traffic.
- Engine: Some customers have reported engine problems, such as the truck indicating it needs a new knock sensor, even after replacing the sensor twice in three months.
These problems have led to a negative overall experience for some owners of the 2020 GMC Sierra 3500, with several issues related to the electrical system, brakes, and engine.
Is 2020 GMC Sierra reliable?
The 2020 GMC Sierra has a predicted reliability score of 86 out of 100. A J.D. Power predicted reliability score of 91-100 is considered the Best, 81-90 is Great, 70-80 is Average, and 0-69 is Fair and considered below average.
Is Sierra 3500 reliable?
GMC Sierra 3500 Reliability Problems. Sierra 3500 owners have made 25 complaints over 29 model years. Using our PainRank™ system we've ranked it 1st in overall reliability out of 15 GMC models , with real lights and brakes concerns.
How many MPG does a 2020 GMC 3500 get?
Based on data from 36 vehicles, 2,013 fuel-ups and 719,674 miles of driving, the 2020 GMC Sierra 3500 HD gets a combined Avg MPG of 13.24 with a 0.17 MPG margin of error. Below you can see a distribution of the fuel-ups with 45 outliers (2.19%) removed.
What is the difference between 2020 GMC 2500HD and 3500HD?
When it comes to trailering, the Sierra 2500HD can haul up to 14,500 lbs. conventionally or 16,700 lbs. with 5th-wheel trailering. The 3500HD has superior conventional trailering, nearly accommodating an extra 2,000 pounds, while its 5th-wheel trailering actually dips a bit.
Is Sierra 3500 reliable?
GMC Sierra 3500 Reliability Problems. Sierra 3500 owners have made 25 complaints over 29 model years. Using our PainRank™ system we've ranked it 1st in overall reliability out of 15 GMC models , with real lights and brakes concerns.
Is 2020 GMC Sierra reliable?
The 2020 GMC Sierra has a predicted reliability score of 86 out of 100. A J.D. Power predicted reliability score of 91-100 is considered the Best, 81-90 is Great, 70-80 is Average, and 0-69 is Fair and considered below average.
What is the fuel mileage of a 2020 GMC 3500?
Based on data from 36 vehicles, 2,018 fuel-ups and 721,865 miles of driving, the 2020 GMC Sierra 3500 HD gets a combined Avg MPG of 13.25 with a 0.17 MPG margin of error.
What is the difference between 2020 GMC 2500HD and 3500HD?
When it comes to trailering, the Sierra 2500HD can haul up to 14,500 lbs. conventionally or 16,700 lbs. with 5th-wheel trailering. The 3500HD has superior conventional trailering, nearly accommodating an extra 2,000 pounds, while its 5th-wheel trailering actually dips a bit.
2020 Gmc Sierra 3500 car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Gmc Sierra 3500 problems, we found that the most common problems with these 2023 model year vehicles are:
- Power train problems
- Electrical system problems
- Service brakes problems
- Structure problems
- Unknown or other problems
The graph below shows statistics for all 2020 Gmc Sierra 3500 vehicle components and the number of complaints received.
Latest 25 complaints 2020 Gmc Sierra 3500
The NHTSA has received 29 complaints about various vehicle components related to the 2020 Gmc Sierra 3500. Below are the 25 most recent complaints reported for 2020 Gmc Sierra 3500 vehicles.
2024-08-01
STRUCTURE PROBLEM
- Date Of Incident: 2024-03-07
- VIN: 1GT49WEYXLF
- Components: STRUCTURE
- Summary: There is a current safety recall N232426400 on GMC pickups including the year of my truck. GMC is saying that my VIN is not covered by the recall. However, I have the multi-pro tailgate and it came open about 6 months ago on its own as i was backing up and it caused me to run into my trailer with the tailgate. I put my tailgate up after moving my truck from under my trailer and then when i went to back up somehow the tailgate popped open and i didnt know and it contacted the top of tailgate while it was down.
2024-07-15
POWER TRAIN PROBLEM
- Date Of Incident: 2024-07-15
- Crash: 1
- VIN: 1GD49SEY3LF
- Components: POWER TRAIN
- Summary: driving 65mph on interstate, attempted to change lanes to pass slower vehicle and pressed upon accelerator pedal...truck violently skidded to a stop and sent me onto shoulder, many vehicles behind me swerved to avoid my vehicle. GM wont repair and says since they cant replicate its not really happening. this has happened twice in last 2 weeks.
2024-07-02
POWER TRAIN PROBLEM
- Date Of Incident: 2024-07-01
- VIN: 1GD49SEY3LF
- Components: POWER TRAIN
- Summary: driving 65mph when vehicle attempted to downshift itself for no reason when instead the rear axles locked up and made a massively loud bang as if axle fell off, let off gas, smoke pouring from rear tires, skidded about 8 feet, it released then locked up 2 more times within 30 secs before I could get off road out of traffic flow. mfd has a tsb for this issue(#21-NA-275 GM) not sure if its transmission or braking system Dealer service could not replicate and told me it was probably my trailer(wasnt traveling with trailer) no warnings, no codes occurred initially at 56000 mile, has happened 10 or 12 times since then. very scary, im afraid to drive or tow now that dealer mentioned trailer brakes.
2024-07-02
POWER TRAIN PROBLEM
- Date Of Incident: 2024-03-30
- VIN: 1GD49SEY3LF
- Components: POWER TRAIN
- Summary: driving 45 mph westbound i70 at eisenhower tunnel, vefhicle made loud bang, brakes locked up momentarily slowing vehicle to around 25mph. multiple vehicles had to make evasive manuevers to avoid collision. vehicle released after a 15FT skid. pulled over to safety and inspect for damage, tires were falt spotted but no damage was visible. called dealer servcei and was told to make appt and set for diagnostic. service could not replicate or find damage so I was sent on my way and told if it does it again let us know. I am scared to drive this vehicle its unsafe
2024-07-02
POWER TRAIN,UNKNOWN OR OTHER,SERVICE BRAKES PROBLEM
- Date Of Incident: 2024-07-01
- Crash: 1
- VIN: 1GD49SEY3LF
- Components: POWER TRAIN,UNKNOWN OR OTHER,SERVICE BRAKES
- Summary: driving approximately 50 mph when vehicle suddenly made loud bang and locked up rear brakes for 25' coming to a stop in road side ditch, numerous vehicles had to make evasive actions to avoid me and other vehicles. flat spotted tire abut no visible physical damage. sat on side of road for transmission temp to cool down then drove to shop without repeat. called dealer was told the earliest appt was a month away. have not been able to repeat incident so far. this has happened a few times and is becoming more frequent, mfg has tsb issued but indicates they cant assist because my warranty has expired so i will have to pay 225 per hour diagnostic fee. this is untenable and dangerous. this needs a recall and repair ASAP.
2024-06-20
FUEL/PROPULSION SYSTEM PROBLEM
- Date Of Incident: 2024-05-28
- VIN: 1GT49WEY4LF
- Components: FUEL/PROPULSION SYSTEM
- Summary: Fuel Pump Driver Module
2024-04-29
POWER TRAIN PROBLEM
- Date Of Incident: 2024-04-07
- VIN: 1GT49VEY5LF
- Components: POWER TRAIN
- Summary: I was driving approximately 60mph pulling a trailer when the back tires locked up for approximately 2 seconds. This happened 3 times within 30 minutes. I've taken it to the GM repair shop. They have seen this happen to 3 or 4 vehicles. Due to not being able to replicate the fault it has been difficult to diagnose. They are going to replace the transmission valve body hoping that will take care of the issue. This is extremely dangerous to everyone on the road when this happens. There are many forums out there that I've read and have been close to deadly accidents involving cars, trucks, RV's, and semis as they've ran off the roads. This seems to be something worth looking into and ensuring GM puts out a recall for. In my case, I am going through an extended warrant for my 2020 3500 with 112,000 miles. The warranty company wants the GM technician to replicate the fault... which isn't possible without hooking up a trailer... also very dangerous which I refuse to do until the issue if resolved. In any case, I will have to hook up a trailer once the part is replaced... praying that it won't happen again.
2024-02-06
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 2024-01-21
- VIN: 1GT49TE70LF
- Components: ELECTRICAL SYSTEM
- Summary: Vehicle will not start due to known GM issues. This failure left my family stranded in cold dark unsafe area once already. If we were in the flow of traffic or had to leave an area immediately we would have been unable too. Known GM issue, engine fault code P12A6 fault code. Bulletin: PIP5719A discusses this issue. I am being told by the dealer there is a newer bulletin which advises ECM update. GM dealer is stating ECM software upgrade is required to resolve at owners expense. Owner is responsible for diagnostic fee in addition to repair costs. If the issue is not resolved vehicle may continue to experience starting failure and or other electrical problems. The night the vehicle left us stranded instrumentation was erratic and not reading properly on the instrument cluster. Very unsafe and GM should reach out to customers to inform them a software update is needed and it should not be at the expense to the consumer if the consumer is out of the bumper to bumper warranty.
2024-01-04
VISIBILITY/WIPER PROBLEM
- Date Of Incident: 2023-11-04
- VIN: 1GT49WEY6LF
- Components: VISIBILITY/WIPER
- Summary: Rear sliding window is leaking water into the cabin
2023-12-08
POWER TRAIN PROBLEM
- Date Of Incident: 2023-12-01
- VIN: 1GT39SE79LF
- Components: POWER TRAIN
- Summary: The contact owns a 2020 GMC Sierra 3500. The contact stated that after stopping at a stop light, the light turned green and the contact depressed the accelerator pedal however, the vehicle failed to accelerate as intended. The contact drove a short distance and noticed that the failure was reoccurring. The contact drove the vehicle to a safe location and turned off the vehicle. The contact exited the vehicle and noticed that the exterior of the vehicle was covered with transmission fluid. The contact stated that the transmission fluid was also on the undercarriage of the vehicle and on the ground. The vehicle was towed to the dealer where it was diagnosed with a failed transmission fluid line. The contact was informed that the transmission fluid line needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and advised the contact to report the failure to the NHTSA Hotline. The failure mileage was approximately 28,000.
2023-08-21
AIR BAGS PROBLEM
- Date Of Incident: 2023-08-12
- Crash: 1
- VIN: 1GT49WEY9LF
- Components: AIR BAGS
- Summary: The contact owned a 2022 GMC Sierra. The contact stated that while her husband was driving at an undisclosed speed, the vehicle collided head-on with another vehicle that ran a red light. The air bags did not deploy. No warning lights were illuminated. A police report was filed. No injuries were reported, but the contact and her husband sought medical treatment for various bruises caused by the seat belt at a later date. The vehicle was not taken to the dealer or an independent mechanic but was instead towed to a tow yard. The vehicle was not repaired. instead deemed a total loss. The manufacturer was not notified of the failure. The failure mileage was 25,000.
2023-07-02
POWER TRAIN PROBLEM
- Date Of Incident: 2022-06-24
- VIN: 1GT49WEY5LF
- Components: POWER TRAIN
- Summary: While accelerating from about 45 - 60mph the truck made a loud bag and the rear tires locked up causing the vehicle to skid. This happened 4 times and nearly caused the cars behind me to crash.
2023-05-17
TIRES PROBLEM
- Date Of Incident: 2023-05-03
- VIN: 1GT49VEY8LF
- Components: TIRES
- Summary: The contact owns a 2020 GMC Sierra 3500 equipped with Goodyear Tires, Tire Line: Wrangler Trail Runner, Tire Size: LT275/65/R20), DOT Number: (NA). The contact stated that while driving approximately 40-45 MPH, the vehicle exhibited the death wobble, causing the vehicle to become difficult to steer. The contact took the vehicle to the dealer to have the wheels aligned; however, the contact was informed of tread separation on the front driver’s side tire, and that the driver’s side rear tire had bubbles. The contact was informed that the passenger’s side front and rear had bubbles as well. The tires were replaced with a different brand tire. The manufacturer was not made aware of the failure. The approximate failure mileage was 29,400.
2023-01-16
POWER TRAIN,SERVICE BRAKES,FORWARD COLLISION AVOIDANCE PROBLEM
- Date Of Incident: 2023-01-15
- VIN: 1GT49WEY9LF
- Components: POWER TRAIN,SERVICE BRAKES,FORWARD COLLISION AVOIDANCE
- Summary: Rear tires locking up out of no where almost made me jack knife.
2022-12-16
STRUCTURE PROBLEM
- Date Of Incident: 2022-12-14
- VIN: 1GT49WEY5LF
- Components: STRUCTURE
- Summary: Rear window leaking on 2020 gmc truck due to faulty rear window seal and plastic slide. Known issue in 2020 models with a service bulletin already in place. Headliner saturated and black mold showing. Rear back liner has been saturated multiple times and gmc would not refund the cost of a whole new window to be put in and reimbursed. GM bulletin # is 18-NA-383
2022-11-29
TIRES PROBLEM
- Date Of Incident: 2022-11-28
- VIN: 1GT49WEY3LF
- Components: TIRES
- Summary: Goodyear Wrangler Trailrunner AT, LT275/65R20, factory installed on a 2020 GMC Sierra Denali 3500. While traveling 60 mph pulling a fifth wheel in South Texas on a clear and dry day, the rear passenger tire unexpectedly lost its tread. As we slowed down, it completely lost tire pressure and we ran on the rim until coming to a complete stop. Immediately prior to the incident, the TPMS and other safety systems in the truck read normal. There were no system warnings and no objects in the road. It put us in a dangerous situation as we were stopped on the shoulder of the highway right before a bridge and had our 3 children in the backseat. We called the police, but they never sent anyone to help with traffic. The rear fender and the wheel well of the truck were badly damaged. We have the faulty tire and it is available for inspection.
2022-11-14
ELECTRICAL SYSTEM,STRUCTURE,ENGINE PROBLEM
- Date Of Incident: 2022-11-13
- Fire: 1
- VIN: 1GT49WEY8LF
- Components: ELECTRICAL SYSTEM,STRUCTURE,ENGINE
- Summary: Plugged in engine block heater and the car erupted in flames. Total loss.
2022-09-20
POWER TRAIN PROBLEM
- Date Of Incident: 2022-09-12
- VIN: 1GT49WEY3LF
- Components: POWER TRAIN
- Summary: The exhaust system is directed to the rear of the vehicle and when towing causes extreme heat to build on the item being towed, in my case a 5th wheel camper. The heat has melted the trim on my camper and is a potential fire hazard.
2022-09-04
TIRES PROBLEM
- Date Of Incident: 2022-09-02
- VIN: 1GT49WEY4LF
- Components: TIRES
- Summary: These tires are Good Year Wrangler Trail Runner AT size LT275/65 R20. My total mileage on these tires was 42,751. These were the original tires that were installed when the truck was purchased new. My Tires are rotated every 7,500 miles. Tire pressure is maintained at the exact pressure and in this case was just checked 4 days prior to the incident. I was driving on an interstate at 70 mph. A vibration started. I checked the Tire pressure monitors and all showed normal pressures. About 4 minutes later the vibration increased and I decided to pull over. I had slowed to about 45 mph and had my turn signal On, as I was intending to pull on to the right shoulder. Suddenly the left rear tire exploded, and tread had separated. My truck was damaged . All the components in the wheel well are gone or damaged. The left rear 1/4 panel/fender is bent. NO repair estimate yet. After the incident I saw zero pressure on that tire indicating on the TPMS.
2022-06-28
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 2022-06-26
- Number Of Injuries: 4
- VIN: 1GT49WEY9LF
- Components: ELECTRICAL SYSTEM
- Summary: The component that failed was the passenger side or main battery. Our safety was compromised when the design of the HVAC system and the battery location allowed the hydrogen sulfide gas into the passenger compartment of the vehicle. The issue has not been confirmed by a deal or independent service center. The battery(s) and vehicle are available for inspection to confirm the issue. I have uploaded pictures of the battery and one can visually see the swollen battery with liquid leaking out of it. There were no warning messages or other symptoms prior to the failure. The rotten egg smell started shortly after the truck was started and my three young children were in the truck for about 10-15 minutes while I was loading items in the bed of the truck. When I entered the vehicle, the smell was extremely strong and my eyes started burning. I opened all the windows to air out the passenger compartment and thought it was possible off gassing from the nearby septic field. Once driving with the windows now closed, the smell came back instantly and very strong. My children started complaining of headache and nausea. For the next part of the trip, we drove with the windows down. When we arrived at our destination, I was able to determine the smell was coming out of the HVAC system while in normal "Auto" mode. Opening the hood, I went to smell around the engine compartment and when I got over the passenger side main battery, the rotten egg smell was so strong that my nose and eyes instantly started burning. We then drove the truck home with the windows closed and the HVAC system in recirculate but the smell still entered the passenger compartment. All four of us had symptoms of hydrogen sulfide poisoning with my son being the worse with multiple vomiting episodes immediately upon exiting the vehicle. Poison Control was notified and all four of us were evaluated in our local Emergency Department for Inhalation Toxin. The truck is all OEM.
2022-03-11
UNKNOWN OR OTHER PROBLEM
- Date Of Incident: 2022-03-04
- VIN: 1GT49UEYXLF
- Components: UNKNOWN OR OTHER
- Summary: In short, the Diesel Exhaust Fluid (DEF) reductant heater failed which requires the entire DEF tank assembly (part 85138746) to be replaced on my 2020 GMC Sierra 3500. This cause the truck to go into "limp" mode where it will not travel above 65 mph, and after another period, the speed continues to be reduced down to 25 mph. Prior to the speed being reduced, there is a warning message that appears stating "Service DEF System See Owner's Manual" and a warning light illuminates in the gauge cluster. Any severe reduction in speed that can cause the truck to go "limp" is a safety concern. In addition to being a safety concern, some quick internet research reveals that this has been a known problem with GM's DEF system since at least 2019. The electrical connections are too small for the current which supplied the DEF tank heater, causing the system to short and trigger the truck into limp mode which renders it useless. The replacement part is on national backorder, and it has been on backorder for years. My truck is completely useless until this part (or a better-engineered replacement) arrives at the dealer, and there are hundreds if not thousands of people waiting on this same, defective part to get their trucks back on the road. People are losing their livelihood and the means by which they support their families. GM has known about this defective part for years and has done nothing- neither engineered a better part nor issued a recall with some kind of workaround. They haven't even been able to stock the defective part, and this is not just a supply chain issue as new trucks are still being built. This problem was not inspected by any police or insurance agency as it did not cause an accident or injury in this case.
2021-11-17
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 2021-11-03
- VIN: 1GT49WEY7LF
- Components: ELECTRICAL SYSTEM
- Summary: Infotainment system AND center instrument cluster went completely black - six times over the course of one month. I took the truck to Alan Webb Chevrolet in Vancouver Washington. Their service technician was aware of infotainment system “Black Screen of Death - BSD” problems due to previous repair work on several different GM models. However, on the way to their Service Department to get this fixed, I rolled down the driver’s side window about 6 inches to get some fresh air and rolled it back up. Out of nowhere the Infotainment system AND the center instrument cluster came back to life. No rhyme, no reason and both stayed on (illuminated). Their Service Technician could NOT recreate the BSD. They had my truck for more than one week AND said they were working with GM engineers to resolve this issue. GM case number SR 9-7065134382. I’m driving and towing my 5th wheel blind without a remedy for this electrical issue.
2021-05-26
POWER TRAIN,ELECTRICAL SYSTEM,SERVICE BRAKES PROBLEM
- Date Of Incident: 2020-05-01
- VIN: 1GT49UEYXLF
- Components: POWER TRAIN,ELECTRICAL SYSTEM,SERVICE BRAKES
- Summary: The computer lite up the dash and reduced power, plus took the trailer brakes off line. This happened while loaded. To reset the system you have to pull over and turn the vehicle off. This happens 2-3 times per day. This was a problem at 600 miles. The transmission shifted from 10 gear to 5th gear while driving 75 miles per hour. The truck had 75,000 miles on it . Had to send another truck out to pick up the load in Santa Rosa New Mexico. The dealer Glenn Polk in Sanger has been working on for the last 4 months There is never a warning until the lights come on with a system failure.
2021-05-26
ELECTRICAL SYSTEM,SERVICE BRAKES PROBLEM
- Date Of Incident: 2020-05-22
- VIN: 1GT49UEY0LF
- Components: ELECTRICAL SYSTEM,SERVICE BRAKES
- Summary: The computer lights up dash reducing power and taking the trailer brakes away. This almost caused a wreck when the truck shut off and the brakes failed. This truck has been in the shop at least once per month trying to fix the issues, from computer and brake failure to injector failure. Glenn Polk Chevrolet in Sanger has been working on this since the truck was new. Also we have case open with General Motors without resolution. The dash lights up at the same time as the brakes fail.
2021-05-26
ELECTRICAL SYSTEM,SERVICE BRAKES,ENGINE PROBLEM
- Date Of Incident: 2020-07-07
- VIN: 1GT49UEY1LF
- Components: ELECTRICAL SYSTEM,SERVICE BRAKES,ENGINE
- Summary: The computer lights up the dash reducing power and turning off power to trailer brakes. This has almost caused an accident on several occasions . It happens a couple of times per trips. This vehicle has been in the shop a couple of times per month since it was put into service. Glenn Polk Chevrolet has worked on it each time and the problem is still there. This truck has also had several injector issues. There is an open case with this vehicle with General Motors with no resolution. I have filled out forms on each of my 2020 GMC's 3500's.
2020 Gmc Sierra 3500 recalls
The National Highway Traffic Safety Administration (NHTSA) has issued 6 recalls for different components of the 2020 Gmc Sierra 3500.
2024-02-01
- Manufacturer: General Motors, LLC
- Components: LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH
- Summary: General Motors, LLC (GM) is recalling certain 2020-2024 Chevrolet Silverado 2500, 3500, GMC Sierra 2500 and 3500 vehicles equipped with power-unlatching tailgates. The tailgate's electronic gate-release switch may short circuit due to water intrusion, which can result in the tailgate inadvertently unlatching while the vehicle is in park.
- Consequence: An unlatched tailgate may open while driving and result in a loss of unsecured cargo, creating a road hazard and increasing the risk of a crash.
- Remedy: Owners are advised to check that the tailgate is closed and latched before driving. Dealers will replace the exterior touchpad switch assemblies, free of charge. Owner notification letters were mailed May 17, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N232426400.
2020-12-17
- Manufacturer: General Motors, LLC
- Components: SEAT BELTS
- Summary: General Motors, LLC (GM) is recalling certain 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, 2021 Chevrolet Suburban and Tahoe and GMC Yukon XL and 2020-2021 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles. The seat belt brackets may not be secured to the seat frame in the front-row center seating position.
- Consequence: If a seat-belt bracket is not secured, the seat belt may not properly restrain an occupant in the front-row center seat position, increasing the risk of injury in a crash.
- Remedy: GM will notify owners, and dealers will inspect left-side and right-side front-row center seat-belt bracket attachments and reassemble it correctly as necessary, free of charge. The recall began January 26, 2021. Owners may contact GMC customer service at 1-800-462-8782, Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202314670.
2020-07-30
- Manufacturer: General Motors LLC
- Components: AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR
- Summary: General Motors, LLC. (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5 and XT6, Chevrolet Blazer, Silverado 1500, 2500 and 3500 and Traverse and GMC Acadia and Sierra 1500, 2500 and 3500 vehicles. The diffuser component of the Roof-Rail Air Bag (RRAB) inflator may not have been properly crimped to the inflator and could separate from the inflator during air bag deployment.
- Consequence: If the diffuser separates from the inflator during deployment, RRAB performance may be degraded, increasing the risk of injury in a crash.
- Remedy: GM will notify owners, and dealers will replace the suspect RRAB modules, free of charge. The recall began September 3, 2020. Owners may contact Chevrolet customer service at 1-800-630-2438, Cadillac customer service at 1-800-333-4223, or Buick customer service at 1-800-521-7300. GM's number for this recall is N202305380.
2020-06-04
- Manufacturer: General Motors LLC
- Components: STRUCTURE:BODY:HOOD
- Summary: General Motors LLC (GM) is recalling certain 2020 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles previously recalled under 20V-142. Some of the vehicles in 20V-324 were not part of Recall 20V-142 but received defect parts during another service (typically during collision repair). The hood-latch striker wires on replacement hoods installed for Safety Recall 20V-142 may not have been heat-treated properly, possibly causing them to fracture.
- Consequence: If a striker wire fractures, the hood may open unexpectedly while driving, increasing the risk of a crash.
- Remedy: GM will notify owners, and dealers will replace the hood assembly, free of charge. For hoods sold over the counter, dealers will contact customers with instructions for hood replacement. The recall began July 7, 2020. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-888-988-7267. GM's number for this recall is N202306490.
2020-03-12
- Manufacturer: General Motors LLC
- Components: LATCHES/LOCKS/LINKAGES:HOOD:LATCH
- Summary: General Motors LLC (GM) is recalling certain 2020 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles. The hood-latch striker wires may not have been heat-treated properly, possibly causing them to fracture.
- Consequence: If a striker wire fractures, the hood may open unexpectedly while driving, increasing the risk of a crash.
- Remedy: GM will notify owners, and dealers will replace the hood assembly, free of charge. The recall began April 13, 2020. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-888-988-7267. GM's number for this recall is N192284960.
2019-11-14
- Manufacturer: General Motors LLC
- Components: SEAT BELTS:PRETENSIONER
- Summary: General Motors LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500, and 2020 Silverado 2500, Silverado 3500, Sierra 2500, and Sierra 3500 vehicles equipped with carpet floor covering. When the front seat belt pretensioners deploy, hot gas may vent through an opening in the pretensioner bracket, possibly igniting the carpet.
- Consequence: A vehicle fire could result if materials ignite inside the vehicle.
- Remedy: GM will notify owners, and dealers will close off the opening in the pretensioner bracket, free of charge. The recall began December 13, 2019. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-888-988-7267. GM's number for this recall is N192270600.
Additional sources
More sources of information about 2020 Gmc Sierra 3500 problems:
More problems with my 2020 GMC 3500 Duramax - GM-Trucks.com
https://www.gm-trucks.com/forums/topic/260573-more-problems-with-my-2020-gmc-3500-duramax/
Oct 4, 2022 ... All of these are high dollar items, and my truck has been down for a significant amount of time. I am supposed to drive from Arizona to Ohio ...
2020 GMC 3500 Duramax Problems | Diesel Place
https://www.dieselplace.com/threads/2020-gmc-3500-duramax-problems.991277/
Oct 7, 2022 ... All of these are high dollar items, and my truck has been down for a significant amount of time. The dealer fixed the DEF injector and I got the ...
2020 L5P Duramax Problems | Chevy Silverado and GMC Sierra ...
https://www.silveradosierra.com/threads/2020-l5p-duramax-problems.745017/
Feb 11, 2022 ... I have 61,000 miles on a 2020 gmc sierra 2500hd denali with the L5P duramax, I want to love this truck, but over the last 2 months the def ...
2020 GMC Sierra 3500HD | Read Owner Reviews, Prices, Specs
https://www.vehiclehistory.com/report/gmc/sierra-3500hd/2020
2020 GMC sierra 3500hd review. Absolutely no problems at all, pulls trailers like nothing, very comfy to drive and has a ton of features to play with, I ...
2020 Known Problem and Short review | Chevy and GMC Duramax ...
https://www.duramaxforum.com/threads/2020-known-problem-and-short-review.998789/
Aug 21, 2019 ... I was in the middle of my first trip pulling 14-15k with my new 2020 2500 Denali. Had the 5er detached and just pulling the ATV trailer and ...
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