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Electrical systemPart report

1990 GMC Sierra Electrical system Problems

Complaints
1about this part
Share
6%of 18 total for the year
Median mileage
55,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 1 complaints about the electrical system of the 1990 GMC Sierra, 6% of the 18 complaints for this model year. Where a mileage was given, the median is 55,000 miles. 1 a fire, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The contact owns a 1990 Gmc Sierra. The contact stated that the transmission suddenly caught fire. The dealer stated that the seals were leaking around the transmission and were the cause of the fire. The dealer also stated that it was not covered under warranty and would not assist with the repair costs. The failure mileage was approximately 55,000. The current mileage was 55,880. The left rear shock absorber fell off, the magnet cover plate of the differential came off and ruined the rear end twice. …”

NHTSA complaint #10336395, filed 2010-06, 55,000 miles

Electrical system: other model years

YearComplaintsShare of year
2017610%
2016233%
201512%
201499%
2013513%
2012724%
201137%
2010412%
2009924%
20081522%
2007712%
2006713%
20052320%
20043921%
20033115%
200262%
2001135%
2000123%
1999122%
199895%
1997125%
199652%
199542%
199442%
199357%
199213%
199016%
1989213%

Other parts of the 1990 GMC Sierra

Brakes
10 complaints
Tires
3 complaints
Seat belts
2 complaints
Body and structure
2 complaints
Suspension
2 complaints
Transmission and drivetrain
2 complaints
Engine cooling
1 complaints
Seats
1 complaints
Steering
1 complaints
Visibility (wipers, defrost, mirrors)
1 complaints

← All problems reported for the 1990 GMC Sierra

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology