2020 Gmc Sierra denali problems

General information about Gmc-Sierra denali
Overview of popular issues
Analysis of common problems
Сomplaints list

Denali is a nameplate used by GMC for its highest trim level on its vehicles. Vehicles with the Denali trim option carry list prices up to 47% higher than base models. Prices range from $38,600 for GMC Terrain to $109,410 for a top-of-the-line Yukon XL Denali (as of 2023).

The Denali nameplate is often used as an insignia or status symbol, and in particular is popular as a less costly alternative to the Cadillac marque. The Yukon Denali line typically represents 40% of Yukon sales in both units and dollars. In 2013 it sold more than 75,558 units of the Denali brand, which accounted for 20% of GMC's sales, making it one of GM's most successful sub-brands.

History

The Denali nameplate started as the top-of-the-line version of the GMC Yukon for the 1999 model year. It was also GM's first attempt to go after sales from the new-for-1998 Lincoln Navigator. At the time of its introduction. General Motors decided to give Cadillac its own luxury SUV so the Denali's exterior was shared with the 1999 Cadillac Escalade, with only the front fascia and lower side body panels differing from the standard Yukon. Although the Yukon was redesigned alongside the Chevrolet Suburban and Chevrolet Tahoe in 2000, the Yukon Denali, Escalade, and Tahoe Limited/Z71 retained their GMT400 base design.

The "Denali" brand was derived from the native Alaskan Athabaskans / Koyukon people's name for the tallest mountain in North America. It is also the name of the Denali National Park and Preserve that surrounds the mountain, as well as Denali State Park.

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Common 2020 Gmc Sierra denali problems

The 2020 GMC Sierra 1500 has received some complaints from owners, with the most common issues revolving around electrical problems, navigation, and the tailgate.

One of the most frequently reported issues is related to the electrical system, with some owners experiencing problems with the speedometer, dash gauges, interior lights, and random locking or unlocking of the vehicle. In some cases, these issues can be challenging to diagnose and may require expensive repairs.

Navigation is another area where the 2020 Sierra 1500 has faced criticism. Some owners have reported that the navigation voice input is useless as it can't recognize most requests, and the navigation system may send drivers down unpaved roads or give incorrect directions. The screen size is also a concern, as it may not adequately display maps and music information at the same time.

The tailgate is another component that has caused issues for some owners. The tailgate is reportedly very heavy, making it difficult to close when the gate is down. Additionally, some owners have reported that the truck came with an electrical cable hanging from underneath that could easily be torn away.

While these issues may not be universal, they are common enough to warrant attention. It's essential for potential buyers to be aware of these potential problems and consider them when making their purchasing decision. It's also worth noting that the 2020 GMC Sierra 1500 has received positive feedback for its smooth ride, comfortable seats, and fantastic engine performance. However, these positive aspects may not outweigh the potential issues for some buyers.

In summary, the 2020 GMC Sierra 1500 has faced complaints from owners regarding electrical problems, navigation issues, and the tailgate. Potential buyers should be aware of these issues and consider them when deciding whether to purchase this vehicle.

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 there any recalls on a 2020 GMC Sierra?

Summary: General Motors LLC (GM) is recalling certain 2020 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles. The bolts used to attach the front and/or rear brake calipers may have not been heat treated and may break under load. Tip: Recalls don't affect every vehicle of the same year, make and model.

How reliable are GMC Sierra Denali?

The GMC Sierra is one of the highest-rated pickup trucks on the market in terms of reliability. This rugged pickup truck comes in eight trims, and all of them offer the GMC Sierra reliability written about in J.D. Power's safety ratings. The Sierra is a light-duty truck, rated number one in safety for 2020.

What is the most common problem with GMC?

Nearly every GMC model experiences issues with its HVAC system. The air conditioning condenser on the 2015 Sierra 1500 is known to fail. It seems the Envoy is the only model that escapes this issue.

How reliable are GMC Sierra Denali?

Is 2020 GMC Sierra reliable?

What is the most common problem with GMC?

Nearly every GMC model experiences issues with its HVAC system. The air conditioning condenser on the 2015 Sierra 1500 is known to fail. It seems the Envoy is the only model that escapes this issue.

Is there any recalls on a 2020 GMC Sierra?

2020 Gmc Sierra denali car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Gmc Sierra denali problems, we found that the most common problems with these 2023 model year vehicles are:

Engine problems
Service brakes problems
Forward collision avoidance problems
Electrical system problems

The graph below shows statistics for all 2020 Gmc Sierra denali vehicle components and the number of complaints received.

2020 Gmc Sierra denali complaints

The NHTSA has received 7 complaints about various vehicle components related to the 2020 Gmc Sierra denali.

2023-11-09

FORWARD COLLISION AVOIDANCE PROBLEM

Date Of Incident: 2022-10-10
Components: FORWARD COLLISION AVOIDANCE
Summary: The contact owns a 2020 GMC Sierra Denali. The contact stated while driving 75 MPH, the Adaptive Cruise Control feature became inoperable. The contact stated that when the vehicle got too close to another vehicle, the Adaptive Cruise Control feature failed to activate as designed. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 6,700. The VIN was unavailable.

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2023-04-26

ELECTRICAL SYSTEM PROBLEM

Date Of Incident: 2023-04-08
VIN: 1GTU9FEL4LZ
Components: ELECTRICAL SYSTEM
Summary: The contact owns a 2020 GMC Sierra Denali. The contact stated while driving 65 MPH at night, the vehicle stalled and the “Shift to Neutral and Restart Vehicle” message was displayed. The contact was unable to restart the vehicle and was unable to visibly see the roadway. The contact was able to park on the side of the road. The vehicle was not drivable. The contact towed the vehicle to his residence, and then to the local dealer the next day, where the vehicle was diagnosed with needing the starter to be replaced. The vehicle was repaired. The manufacturer had not been informed of the failure. The failure mileage was unknown.

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2021-11-23

ENGINE PROBLEM

Date Of Incident: 2021-06-01
Components: ENGINE
Summary: The contact's father owns a 2020 GMC Sierra Denali 3500. The contact stated that while his father was driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer and diagnosed with a cylinder #1 misfire. The vehicle was repaired; however, the failure recurred. The vehicle was then taken to Wackerli Auto Center (1363 N Holmes Ave, Idaho Falls, ID 83401) on numerous occasions and diagnosed with a faulty sensor. The dealer replaced the sensor; however, the failure recurred. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 20,000. The VIN was unavailable.

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2021-04-07

SERVICE BRAKES PROBLEM

Date Of Incident: 2020-08-15
VIN: 1GT49REY7LF
Components: SERVICE BRAKES
Summary: BRAKES SQUEAK. STARTED ABOUT 3000 MILES. I HAVE COMPLAINED TO DEALER SEVERAL TIMES.

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2020-12-16

ENGINE PROBLEM

Date Of Incident: 2020-08-24
VIN: 1GT49REY4LF
Components: ENGINE
Summary: KNOCKING COMING FROM ENGINE - NOTICEABLE UNNECESSARY NOISE IN WHICH DEALER CAN NOT FIX THE PROBLEM

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2020-10-29

SERVICE BRAKES,ENGINE PROBLEM

Date Of Incident: 2020-10-29
VIN: 3GTU9FEL4LG
Components: SERVICE BRAKES,ENGINE
Summary: TWO ISSUES BROKEN VALVE SPRING CAUSED ENGINE TO SHUT DOWN, SECOND SERVICE BRAKE, BRAKE FAILURE LIGHT, SERVICE ESC, SERVICE TRAILER BRAKE MESSAGES CAUSING BRAKE FAILURE

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2020-10-08

ENGINE PROBLEM

Date Of Incident: 2020-10-07
VIN: 1GT49REY0LF
Components: ENGINE
Summary: I NOTICED SEVERAL SPOTS OF OIL ON MY DRIVEWAY, I THEN INSPECTED THE UNDERSIDE OF THE ENGINE (L5P) AND NOTICED OIL DRIPPING FROM SEVERAL BOLTS AND LINES. MY VEHICLE, A 2020 2500HD DENALI DIESEL, HAS ONLY 2,200 MILES ON IT FROM NORMAL HIGHWAY DRIVING.

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Additional sources

More sources of information about 2020 Gmc Sierra denali problems:

REVIEW: 2020 GMC Sierra Issues After 2 Years of Ownership ...

https://www.youtube.com/watch?v=3kU0gg1wtZU

Dec 10, 2022 ... How does the 2020 GMC Sierra 1500 hold up after 50000 miles of wear and tear? Subscribe to @DGHD | Merch: https://debossgarage.com/merch ...

2020 GMC Yukon Denali transmission issue : r/MechanicAdvice

https://www.reddit.com/r/MechanicAdvice/comments/16x75eb/2020_gmc_yukon_denali_transmission_issue/

Oct 1, 2023 ... You would have to see exactly which vehicles are covered, what the problem is and if it was rectified. What is/was the warranty on your truck? I ...

Another 2020 GM Truck has major problems! - YouTube

https://www.youtube.com/watch?v=rjugc9blKis

Oct 21, 2020 ... NEWS.... How the Story ends for the truck! https://youtu.be/ZfoKePzgd-E Spoiler... He now drives a FORD :) This is a man that I have know ...

2020 GMC Sierra 1500 Crew Cab Problems | Kelley Blue Book

https://www.kbb.com/gmc/sierra-1500-crew-cab/2020/common-problems/

How reliable is the 2020 GMC Sierra 1500 Crew Cab? See the most common repairs performed and learn if your vehicle is at risk for major repairs in the next ...