2003 GMC L Series electrical system problems
The 2003 GMC L Series has 50 electrical system complaints filed with NHTSA — 30% of the year's total, and the first year with meaningful reports in this category.
50
Electrical System complaints
30%
Share of year
2
Crash-involved
0
Related recalls
What owners report
“I WAS DRIVING HOME FROM WORK ENTERING THE FREEWAY ON RAMP. THE RAMP IS CONTROLLED BY A SIGNAL AND I WAS WAITING MY TURN WHEN THE ENGINE FAILED. I WAS COASTING DOWNHILL INTO ANOTHER CAR WHEN I HIT THE BRAKES AND THERE WERE NO BRAKES. I BUMPED THE CAR IN FRONT OF ME DAMAGING THE FRONT GRILL AND HOOD…”
Common questions
How many electrical system complaints does the 2003 GMC L Series have?
NHTSA has 50 complaints about the 2003 GMC L Series electrical system — 30% 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.