2021 Gmc Sierra 2500 problems
The Chevrolet Silverado is a range of trucks manufactured by General Motors under the Chevrolet brand. Introduced for the 1999 model year, the Silverado is the successor to the long-running Chevrolet C/K model line. Taking its name from the top trim level from the Chevrolet C/K series, the Silverado is offered as a series of full-size pickup trucks, chassis cab trucks, and medium-duty trucks. The fourth generation of the model line was introduced for the 2019 model year.
The Chevrolet Silverado shares mechanical commonality with the identically related GMC Sierra; GMC ended the use of the C/K nomenclature a model generation prior to Chevrolet. In Mexico, high-trim level versions of the Silverado use the Chevrolet Cheyenne name (not to be confused with the 2003 concept). Competing against the Ford F-Series, Ram Pickup, Toyota Tundra, and Nissan Titan, the Silverado is among the best-selling vehicles in the United States, having sold over 12 million trucks since its introduction in 1998 as a 1999 model year.
History
The Silverado nameplate made its debut for the 1975 model year, becoming the top trim level on all Chevrolet C/K trucks, slotted above Custom Deluxe, Scottsdale, and Cheyenne. For the 1968 model year (seven years before the Silverado), GMC C/K trucks used variations of the Sierra name (Sierra, Sierra Classic, Sierra Grande, and High Sierra). Even after the C/K series officially ended, GM still uses the CK and the CC in their current model codes, to denote a two-wheel drive (CC), and four-wheel drive (CK).
For the 1988 GMT400 model architecture, Chevrolet retained the C/K model nomenclature, with GMC branding its full-size line as Sierras. While sharing the same body and chassis, the model chronology of the Silverado and Sierra are different, with five generations of the Sierra, while four of the Silverado.
In 2018, at the NTEA Work Truck Show in Indianapolis, Indiana, Chevrolet unveiled the first medium-duty Silverado, expanding the model line to a 4500HD, 5500HD, and 6500HD chassis cab. Largely the successor to the 2003–2009 GMT560 chassis, the medium-duty trucks are exclusive to Chevrolet, with no plans for an equivalent GMC version. Instead, Navistar International (now partnering with GM) would sell the medium-duty trucks as a rebadged counterpart, called the CV. This is in fact a very similar nod to how the Avalanche did not have a GMC Yukon–based equivalent, but instead, Cadillac would take its place as the former's rebadged counterpart, the Escalade EXT.
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Common 2021 Gmc Sierra 2500 problems
The 2021 GMC Sierra 2500 has been reported to have several common problems, primarily related to air conditioning and defrost issues, engine lifter failures, and recalls.
- Engine Lifter Failures: The most common problem with the 2021 GMC Sierra 2500 is related to engine lifter failures, which can cause complete engine failure. Symptoms include knocking noises and shaking, which can lead to significant repair costs. This issue has been reported by multiple owners, indicating a potential design or manufacturing flaw.
- Recalls: The 2021 GMC Sierra 2500 has been subject to several recalls, which may not affect every vehicle of the same year, make, and model. For instance, a recall related to the Anti-Lock Braking System (ABS) affects certain 2020-2021 Chevrolet Silverado 2500 and GMC Sierra 2500 vehicles equipped with a 17" spare tire. If the ABS system cannot control the rear wheels independently, it increases the risk of a crash. Another recall is due to incorrect bolts being used to secure the seat belts, which may not properly attach the seat belts to the vehicle.
These issues, particularly the engine lifter failures and recalls, can lead to significant repair costs and inconvenience for owners. It is essential to stay informed about recalls and have the necessary repairs performed to ensure the safety and reliability of the vehicle.
Are GMC 2500 trucks reliable?
The GMC Sierra 2500 HD Reliability Rating is 3.0 out of 5.0, which ranks it 8th out of 17 for fullsize trucks. The average annual repair cost is $912 which means it has poor ownership costs.
What year did GMC Sierra 2500 change body style?
2015
Completely redesigned, the 2015 GMC Sierra 2500HD features more rugged styling, an array of ergonomic refinements and three powerful V-8 engine choices.
What's the difference between 1500 and 2500 GMC Sierra?
Power & Handling
The new 2022 Sierra 1500 can tow up to 13,000 pounds and the Sierra 2500 can tow up to 18,500 pounds. Both trucks offer multiple engine options and are available with rear-wheel drive (RWD) and four-wheel drive (4WD). Compare the available engines of the 2022 GMC Sierra 1500 and Sierra 2500 below.
How many miles will a GMC 2500 last?
According to one study by iSeeCars.com, the GMC Sierra 2500HD is the longest-lasting GM work truck, closely followed by the Chevrolet Silverado 2500HD, both of them more than three times as likely as the average vehicle to last to 250,000 miles. Studies may vary by model year and method.
Are GMC 2500 trucks reliable?
The GMC Sierra 2500 HD Reliability Rating is 3.0 out of 5.0, which ranks it 8th out of 17 for fullsize trucks. The average annual repair cost is $912 which means it has poor ownership costs.
Is GMC Sierra 2500 gas or diesel?
Standard 6.6L V8 Gas Engine With Allison® 10-Speed Automatic Transmission. Multimatic™ DSSV Dampers.
What's the difference between 1500 and 2500 GMC Sierra?
Power & Handling
The new 2022 Sierra 1500 can tow up to 13,000 pounds and the Sierra 2500 can tow up to 18,500 pounds. Both trucks offer multiple engine options and are available with rear-wheel drive (RWD) and four-wheel drive (4WD). Compare the available engines of the 2022 GMC Sierra 1500 and Sierra 2500 below.
Should I buy the GMC 1500 or 2500?
2500: Power. In terms of power, you can definitely get more from the GMC Sierra 2500. If you are looking for powerful towing and payload numbers, you can expect impressive performance from both, but the 2500 comes out on top.
2021 Gmc Sierra 2500 car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Gmc Sierra 2500 problems, we found that the most common problems with these 2023 model year vehicles are:
- Engine problems
- Structure problems
- Electrical system problems
- Exterior lighting problems
- Power train problems
The graph below shows statistics for all 2021 Gmc Sierra 2500 vehicle components and the number of complaints received.
2021 Gmc Sierra 2500 complaints
The NHTSA has received 21 complaints about various vehicle components related to the 2021 Gmc Sierra 2500.
POWER TRAIN PROBLEM
- Date Of Incident: 2024-07-22
- VIN: 1GT59LEY1MF
- Components: POWER TRAIN
- Summary: The transmission started lurching and surging power while driving
ELECTRICAL SYSTEM,ENGINE,FORWARD COLLISION AVOIDANCE PROBLEM
- Date Of Incident: 2024-08-13
- VIN: 1GT49REY1MF
- Components: ELECTRICAL SYSTEM,ENGINE,FORWARD COLLISION AVOIDANCE
- Summary: Smog system check and Engan warning light keeps come on.
LATCHES/LOCKS/LINKAGES PROBLEM
- Date Of Incident: 2023-09-01
- VIN: 1GT49REY1MF
- Components: LATCHES/LOCKS/LINKAGES
- Summary: The contact owns a 2021 GMC Sierra 2500. The contact stated while driving approximately 25–35 MPH, the tailgate unlatched and opened unexpectedly. The contact stated that while the vehicle was parked, the tailgate opened independently. The contact stated that the tailgate down message was displayed after the failure. The vehicle was taken to an independent mechanic at a body shop, who determined that the failure was due to the touchpad. The vehicle was repaired. The vehicle was taken to a body shop, where it was replaced. The contact received notification of NHTSA Campaign Number: 24V060000 (Latches/Locks/Linkages); however, the part to do the recall repair was not yet available. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The failure mileage was approximately 49,000. Parts distribution disconnect.
EXTERIOR LIGHTING PROBLEM
- Date Of Incident: 2024-04-01
- VIN: 1GT49REY1MF
- Components: EXTERIOR LIGHTING
- Summary: 3 year old truck. The left headlight enclosure gained water and caused the whole headlight system to have issues. Water caused the Headlights to Flash high beams (both), turn off and blinkers not to work. This defect the whole side that is effective. This can cause other drivers or the owner to have an accident. 6 months later, Now the right side headlight is doing the same. I’m out of warranty with only 40k miles. The seal is not strong enough to keep water out the enclosure. This can also cause the whole light system to shut down while driving. Very dangerous especially at night.
STRUCTURE PROBLEM
- Date Of Incident: 2024-03-20
- VIN: 1GT49REY2MF
- Components: STRUCTURE
- Summary: My tailgate unexpectedly open as I was driving down the road. (2021 GMC 2500 Denali Sierra) This was the second time this has happened and lost things driving down the road. (3 propane tanks and a small grill the first and then an air compressor the second time) Both times it happened I opened and closed the tailgate with the vehicle running. Both times I was unaware of tailgate opening and did not notice until I got home. The first time it happened I thought it was operator error but after this weekend, I looked into this and see there was a recall on it this month. I still felt it was necessary to report incidents.
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 2024-03-07
- VIN: 1GT49MEY8MF
- Components: ELECTRICAL SYSTEM
- Summary: The harness that hooks to bumper plug for trailer lighting is not completely water tight. Allows water in and creates buildup that weakens the connection as well as allows the plug wire connection to snap out and push out from the pin. Further inspection it was causing a short in the system. I attempted to clean and put some-electric grease on the plug to help clean it but then relaized 3 pins were broken and pushed back.
ENGINE PROBLEM
- Date Of Incident: 2024-02-14
- VIN: 1GT49PEY8MF
- Components: ENGINE
- Summary: The contact owns a 2021 GMC Sierra 2500. The contact stated that the vehicle was equipped with an engine block heater that he plugged into the vehicle when the weather was below 32 degrees to start the vehicle. The contact stated that he noticed that the engine block heater was causing the GFCI outlet in his residence, to experience an electrical short circuit. The dealer was notified of the failure and informed the contact that it was a known failure. An appointment was scheduled for diagnostic testing. The vehicle was not diagnosed or repaired. The contact related the failure to NHTSA Campaign Number: 19V328000 (Engine) however, the VIN was not included. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 55,000.
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 2024-02-02
- VIN: 1GT49MEY8MF
- Components: ELECTRICAL SYSTEM
- Summary: While driving the entire dash cluster (speed,rpm etc) turns off entirely, reloads as if truck is just starting with all lights coming off and on, needles cycling max/min. Unable to recreate on command, multiple others reported same issue with no cause/cure listed.
STRUCTURE,UNKNOWN OR OTHER PROBLEM
- Date Of Incident: 2024-01-28
- VIN: 1GT49PEY8MF
- Components: STRUCTURE,UNKNOWN OR OTHER
- Summary: The tailgate latch is not waterproof, and opens on its own sometimes. this can allow things to fall out of your truck.
EXTERIOR LIGHTING PROBLEM
- Date Of Incident: 2023-08-06
- VIN: 1GT49PE78MF
- Components: EXTERIOR LIGHTING
- Summary: The driver side headlamp stopped working, Condensate buildup may be a contributing factor. No accident and vehicle is meticulously maintained. No reason for lamp seals to be damaged or wear. Barely three years old and requires a replacement at $1400 for the part and another $1000 in labor. Outside of 36000 mile warranty.
PARKING BRAKE PROBLEM
- Date Of Incident: 2023-11-09
- VIN: 1GT49PEY8MF
- Components: PARKING BRAKE
- Summary: The contact owns a 2021 GMC Sierra 2500. The contact stated that on several occasions while in park(P) with the parking brake engaged, the parking brake warning light was illuminated. The contact also stated that the parking brake would not disengage until the vehicle was shifted into reverse(R). The contact stated that he observed a loud banging sound coming from the rear of the vehicle when the parking brake was finally disengaged. The vehicle was taken to a dealer where it was diagnosed that the driver’s side rear actuator needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 51,248.
EXTERIOR LIGHTING PROBLEM
- Date Of Incident: 2023-10-06
- VIN: 1GT49PEY3MF
- Components: EXTERIOR LIGHTING
- Summary: Passenger headlight light fills up with moisture resulting in the HID module filling up with water and shorting out. The high beam starts flashing when you try to use your turn signal and eventually the headlights completely stop working. Is a known problem, but GM won’t do anything to help if you’re outside of the 3year/36,000 mile warranty. Currently unable to get a new headlight because of the on going strike.
POWER TRAIN PROBLEM
- Date Of Incident: 2023-06-10
- Components: POWER TRAIN
- Summary: The owns a 2021 GMC Sierra 2500. The contact stated while driving 70 MPH, the RPM revved up to 6,000 RPM. Additionally, the vehicle lost motive power. The vehicle was taken to the dealer, who informed the contact that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 47,000. The VIN was not available.
SERVICE BRAKES PROBLEM
- Date Of Incident: 2022-04-05
- VIN: 1GT49ME7XMF
- Components: SERVICE BRAKES
- Summary: The contact owns a 2021 GMC Sierra 2500. The contact stated while approaching a stop sign and depressing the brake pedal, the brakes were squeaking. The vehicle was taken to the dealer and the contact was informed that the brake pads needed to be replaced. The brakes on the vehicle were replaced but the failure reoccurred. The vehicle was taken to another dealer and the caliper on the front driver’s side was replaced and the failure reoccurred. The vehicle was taken to another dealer who was aware of the issue however, there was no recall for the failure. The manufacturer was not contacted. The failure mileage was 800.
AIR BAGS,SEAT BELTS PROBLEM
- Date Of Incident: 2022-02-23
- VIN: 1GT19PEY7MF
- Components: AIR BAGS,SEAT BELTS
- Summary: The “Service Safety Restraint” alarm goes off continually on my 2021 GMC Sierra 2500HD AT4. The warranty is no longer valid as at the time of occurrence I was at 34,500 miles and when I took it in the warranty had expired due to exceeding 36,000 miles. Extended warranties were not purchased and this began approximately 8-9 months after purchase. The code given is “b0014 Driver Seat Side Air Bag Deployment Loop” with a description of high resistance in wiring or wiring harness. After much research I have found that many GMC 2021 vehicles and previous models have had this exact same issue. No dealership as of yet has offered to help or understand that this defect was of their own flawed design. The issue that I am having is exactly the same as other models such as the 2021 Yukon, Sierra 1500, Suburban and others. This is a safety issue and only want GMC to account for their flaw. I do not believe I should have to pay for a design flaw or equipment malfunction that is well known amongst GMC vehicles. I am asking the NHTSA to help me in this matter and the many others who are having the same issue and for the manufacturer to be accountable for their own flaw.
AIR BAGS,STRUCTURE,UNKNOWN OR OTHER PROBLEM
- Date Of Incident: 2022-08-02
- Crash: 1
- Fire: 1
- VIN: 1GT59ME77MF
- Components: AIR BAGS,STRUCTURE,UNKNOWN OR OTHER
- Summary: Hit in the driver side tire, air bags didn’t release. Truck then went up in flames.
STRUCTURE PROBLEM
- Date Of Incident: 2022-07-01
- VIN: 1GT49RE71MF
- Components: STRUCTURE
- Summary: when driving down the rode the center hood scoop blew off 0
ENGINE PROBLEM
- Date Of Incident: 2022-04-26
- VIN: 1GT49PEY0MF
- Components: ENGINE
- Summary: Diesel Exhaust Fluid tank, high pressure
TIRES PROBLEM
- Date Of Incident: 2022-04-23
- VIN: 1GT49LEY9MF
- Components: TIRES
- Summary: LT245/75R17 I bought these tires on Walmart. com June 2021 and had Walmart install with road hazard and lifetime balance, I returned to Walmart in April 2022 and was told I had a defective tire, that it was coming apart, I can see the fibers around the issue area and soft spongy for approximately 14 inches sounds like glue not sticking when I push around the bead area, Walmart told me it was a manufacturer defective tire and they included that on the work order and also told me to take tire and contact manufacturer which I did, I have spoken and also emailed with a Michael Dorr with Unicorn Tire. without any positive results only denied a claim. this tire needs to be Inspected and I want a new one, this for sure is defective.
SERVICE BRAKES PROBLEM
- Date Of Incident: 2021-11-24
- VIN: 1GT49PEY9MF
- Components: SERVICE BRAKES
- Summary: Brake pads have excessive squealing. Squealing implies incorrect pressure to rotor to stop the vehicle, which highly concerns me as an operator. According to the dealer where I reported the issue, there is a technical bulletin that approves replacement of the brake pads for free if reported in first 7500 miles. My truck exceeded that mileage when I noticed the squealing. If this was a recall for the defective brakes, the dealer would cover the costs to repair, but not for a technical bulletin according to the service department, and confirmed by GMC. I now have to pay $1500 to replace brakes on a new truck with 15000 miles on it, or risk my safety. I believe this should be a recall and appreciate any assistance in this matter.
ENGINE,BACK OVER PREVENTION,FORWARD COLLISION AVOIDANCE PROBLEM
- Date Of Incident: 2021-02-24
- VIN: 1GT49PEY5MF
- Components: ENGINE,BACK OVER PREVENTION,FORWARD COLLISION AVOIDANCE
- Summary: THE TRUCK IS PARKED AT DEALERSHIP
2021 Gmc Sierra 2500 recalls
The National Highway Traffic Safety Administration (NHTSA) has issued 5 recalls for different components of the 2021 Gmc Sierra 2500.
- 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.
- Manufacturer: General Motors, LLC
- Park Out Side: 1
- Park Out Side: 1
- Components: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE
- Summary: General Motors, LLC (GM) is recalling certain 2021-2022 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500, and Sierra 3500 vehicles with electronic brake control modules (EBCM) replaced during vehicle assembly. The bolts that attach the brake pressure modulator valve (BPMV) assembly may not be properly tightened, which could fail to seal the two sub-assemblies and allow water intrusion.
- Consequence: Water in the BPMV may cause an electrical short circuit and increase the risk of fire.
- Remedy: Owners are advised to park outside and away from other structures until the recall repair is completed. Dealers will replace the BPMV assembly, free of charge. Owner notification letters were mailed on October 20, 2021. 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 N212349181.
- Manufacturer: General Motors, LLC
- Components: TIRES:TEMPORARY/EMERGENCY SPARE TIRE
- Summary: General Motors, LLC. (GM) is recalling certain 2020-2021 Chevrolet Silverado 2500 and GMC Sierra 2500 vehicles equipped with a 17" spare tire (RPO ZHQ or ZXT) and either the 20" accessory road tire (RPO REM) or the 18" accessory road tire (RPO Q2V). Operating the spare tire with other 20" or 18" tires can prevent the Anti-Lock Braking System (ABS) from engaging.
- Consequence: An ABS system that cannot control the rear wheels independently increases the risk of a crash.
- Remedy: Dealers will provide the appropriate spare tire and apply a new spare tire information label, free of charge. Owner notification letters were mailed on October 18, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020; GMC customer service at 1-800-462-8782. GM's number for this recall is N212329780.
- Manufacturer: General Motors, LLC
- Components: SEAT BELTS
- Summary: General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and Chevrolet Blazer, Camaro, Colorado, Equinox, Silverado 1500, 2500 and 3500, Suburban and Tahoe vehicles. Incorrect bolts may have been used at one or more fastening locations to secure the seat belts to the vehicle. If an incorrect bolt was used, the seat belt may not be properly attached to the vehicle.
- Consequence: If a seat belt assembly is not properly attached to the vehicle, the seat belt may not properly restrain an occupant in the event of a crash, increasing the risk of injury.
- Remedy: GM will notify owners, and dealers will replace the suspect bolts, free of charge. The recall began January 29, 2021. Owners may contact GMC customer service at 1-800-462-8785, Cadillac customer service at 1-800-458-8006, or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202322230.
- 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.
Additional sources
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