2021 GMC Sierra 1500 electrical system problems
The 2021 GMC Sierra 1500 has 71 electrical system complaints filed with NHTSA — 10% of the year's total, and roughly flat versus the prior model year.
71
Electrical System complaints
10%
Share of year
0
Crash-involved
0
Related recalls
Electrical System complaints by year
What owners report
“RETURNED HOME AFTER SOME SHOPPING. PARKED TRUCK IN DRIVE WAY. APPROXIMATELY 5 MINUTES AFTER RETURNING HOME MY WIFE SAW TRUCK SMOKING FROM UNDER THE HOOD. WITHIN ANOTHER MINUTE OR TWO THERE WERE VISIBLE FLAMES COMING FROM THE BACK EDGE OF THE HOOD. WE CALLED 911. WITHIN 5 MINUTES THE ENTIRE FRONT…”
Common questions
How many electrical system complaints does the 2021 GMC Sierra 1500 have?
NHTSA has 71 complaints about the 2021 GMC Sierra 1500 electrical system — 10% of all complaints filed for that model year.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.