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GMC / Sierra 2500 / 2020

2020 GMC Sierra 2500 problems

Owners have filed 107 complaints about the 2020 GMC Sierra 2500 with NHTSA. Power train accounts for 20.6% of them — the clear leader, ahead of service brakes at 11.2%. A further 15.0% were filed without a specific system named.

Complaints107
Crashes1
Fires7
Injuries1
Deaths0

What owners report breaking

Power train 20.6% · 22
Unknown or other 15.0% · 16
Service brakes 11.2% · 12
Electrical system 11.2% · 12
Engine 9.3% · 10
Steering 5.6% · 6
Structure 4.7% · 5
Forward collision avoidance 3.7% · 4
Severity

Of those complaints, 1 describe a crash, 7 describe a fire and 1 report an injury.

Reading the numbers

Across the 8 model years of the GMC Sierra 2500 in this data, 2020 draws comparatively few complaints; 2003 is the outlier year.

Filings are rising — 61 in the last three years against 32 in the three before. For a vehicle this age that usually points to a wear-related failure owners are hitting now.

The median odometer reading at the time of complaint was 25,400 miles.

In owners' own words

After the transmission recall was completed, I’m now having erratic shifting. Having the recall adding software monitoring for a hardware issue is inadequate. Now that I am out of warrentee, gm has not resolved the issue and now I am having shifting problems. Power train
A couple times I heard loud clanking coming from rear brakes. One time in particular I was trying to stop and it felt line someone had ran into my truck but must have been the rear wheel locking up Power train
Transmission not shifting correctly. Have had the recall software update. Two new valve bodies and still not shifting correctly. Transmission is known to lock up. Power train

Verbatim from NHTSA filings. Complaints are unverified owner reports.

Safety recalls

Checking NHTSA for open recalls…

Other GMC Sierra 2500 years

2002 164 complaints · 26.8% service brakes, hydraulic 2003 193 complaints · 22.8% service brakes, hydraulic 2004 175 complaints · 28.0% electrical system 2005 159 complaints · 26.4% electrical system 2015 100 complaints · 26.0% exterior lighting 2024 135 complaints · 23.0% electrical system

Compare all 8 model years →