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2020 Gmc Sierra 1500

2020 GMC Sierra 1500: engine complaints lead by a wide margin

Owners filed 429 complaints with NHTSA. The engine is by far the most reported area at 48%, followed by the power train (20%) and the electrical system (18%). No deaths are reported across any area. The brakes draw fewer complaints (12%) but the most injuries (3) and crashes (3) of any single area, so they are worth a close look on a test drive.

Most reported areas

Engine safety 48%
By far the biggest complaint: 205 reports (48%), with 2 crashes and 1 fire but no injuries. Watch for hard or failed starting.
Power Train safety 20%
Second most reported: 85 reports (20%), linked to 1 crash, with no fires or injuries. Check that it shifts cleanly through all gears.
Electrical System safety 18%
77 reports (18%), including 2 with fire and 1 injury. The fire count makes this worth checking carefully.
Service Brakes safety 12%
51 reports (12%) but the most serious by outcome: 3 crashes, 3 injuries, and 1 fire. Test the brakes thoroughly.
Steering safety 9%
The smallest of the top areas: 37 reports (9%), with 1 crash and 1 injury. Watch for warning lights and reduced steering assist.

Source: NHTSA owner complaints · 429 complaints

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General information compiled from public NHTSA complaint data, for reference only — not professional advice and not reviewed by automotive experts. Verify before acting; Team AM is not responsible for decisions made from it.