2003 Chevrolet Express 3500 Electrical system Problems
- Complaints
- 3about this part
- Share
- 25%of 12 total for the year
- Median mileage
- 150,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the electrical system of the 2003 Chevrolet Express 3500, 25% of the 12 complaints for this model year. Where a mileage was given, the median is 150,000 miles. 2 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.
“Wire harness fire. Water got into the end of one of the connectors from the wire harness going into the trasmission. The result of the water getting into the transmission caused an electrical fire and caused a short in the transmission and engine wire harness, the final result was the wire harness was completely burned up. There was evidence of glueing the connectors years ago.I if the connectors are not sealed, it is possible for water to enter and short out connectors and other electrical components.”
NHTSA complaint #10413176, filed 2011-07, 150,000 milesRelated service bulletins
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- 10210817Apr 21, 2022This technical bulletin provides a procedure to repair a possible wiring harness repair if damaged by the parking brake, brake booster mount or brake pedal bolt.
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Electrical system: other model years
Other parts of the 2003 Chevrolet Express 3500
2 complaintsSeat belts
2 complaintsAir bags
1 complaintsBrakes
1 complaintsEngine
1 complaintsBody and structure
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2003 Chevrolet Express 3500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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