GMC Sierra vs Chevrolet Blazer

Both cars' complete complaint records, side by side.

Read the totals carefully. NHTSA publishes no sales figures, so the car that sold more collects more complaints regardless of quality. The rows worth weighing are the proportions — the share of complaints that involved harm, and which part dominates.

Measure	GMC Sierra	Chevrolet Blazer
Complaints on file	4,896	11,236
Model years covered	1976–2017	1973–2026
Worst model year	2000	1996
Best model year	2011	2005
Crashes reported	354	1,104
Fires reported	84	258
Injuries reported	189	569
Deaths reported	11	36
Most complained-about part	Brakes	Brakes
Share of complaints involving harm	13%	17.5%

GMC Sierra by year

2 4 1 5 2 6 22 30 12 33 109 221 327 310 302 230 721 557 333 291 248 224 152 65 71 84 48 43 67 46 46 132 67 8 77

76 77 82 83 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Brakes 1,507 30.8%

Windows, Mirrors & Wipers 527 10.8%

Transmission & Drivetrain 345 7.0%

Steering 264 5.4%

Electrical System 262 5.4%

Engine & Cooling 242 4.9%

Body & Structure 206 4.2%

Airbags 196 4.0%

Chevrolet Blazer by year

1 1 2 2 1 1 1 2 8 10 35 21 38 45 47 42 267 337 616 774 1,707 1,579 1,098 1,025 612 885 464 301 103 67 18 20 11 5 290 354 198 76 63 68 40 1

73 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 19 20 21 22 23 24 25 26

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Brakes 2,978 26.5%

Engine & Cooling 1,165 10.4%

Windows, Mirrors & Wipers 995 8.9%

Transmission & Drivetrain 855 7.6%

Electrical System 832 7.4%

Suspension 717 6.4%

Fuel & Propulsion 638 5.7%

Lights 425 3.8%