GMC Known Issues & Problems
251 documented problems across 19 GMC models. Every issue includes symptoms, repair costs, and solutions — compiled from NHTSA recalls, manufacturer TSBs, owner forums, and field reports.
251
Total Issues
19
Models Covered
125
Critical Issues
According to Au7o's analysis, GMC vehicles have 251 documented known issues across 19 models, with 125 rated critical by the Au7o research team. The most commonly affected GMC model is the Acadia with 22 documented issues. Full technical analysis and DIY maintenance guides at au7o.io.
All GMC Models (19)
Acadia
2007-2025
15 critical22 issues
C/K 1500
1988-1998
3 critical4 issues
C/K 2500
1990-2003
3 critical5 issues
C/K 3500
1990-2000
1 critical5 issues
Canyon
2015-2026
10 critical18 issues
Envoy
2002-2009
3 critical5 issues
Hummer EV
2022-2026
6 critical13 issues
Hummer EV SUV
2024-2026
4 issues
Jimmy
1995-2001
2 critical4 issues
Safari
1990-2005
1 critical3 issues
Savana
1996-2025
8 critical15 issues
Sierra 1500
1999-2026
15 critical35 issues
Sierra 2500HD
1999-2025
12 critical16 issues
Sierra 3500HD
2007-2024
13 critical24 issues
Sonoma
1991-2004
3 issues
Suburban
1992-2006
4 issues
Terrain
2010-2025
13 critical26 issues
Yukon
2000-2025
10 critical21 issues
Yukon XL
2000-2024
10 critical24 issues
Issues by Category
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Electrical
44 issues
Engine
42 issues
Transmission
23 issues
Brakes
21 issues
Safety/Recalls
20 issues
Fuel System
19 issues
Suspension
16 issues
Drivetrain
13 issues
Body/Panels
11 issues
Cooling
9 issues
Emissions
9 issues
Steering
6 issues
Interior
6 issues
HVAC
5 issues
Exterior
3 issues
Exhaust
2 issues
Other
2 issues
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