2003 GMC Denali Electrical system Problems
- Complaints
- 6about this part
- Share
- 19%of 32 total for the year
- Median mileage
- 75,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the electrical system of the 2003 GMC Denali, 19% of the 32 complaints for this model year. Where a mileage was given, the median is 75,000 miles.
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 speedometer shows inaccurate and erratic readings. Speed appears to be 20 MPH off and will jump to different speeds. No specific event caused this to happen, it just started about a month ago and has progressively gotten worse over time.”
NHTSA complaint #10217321, filed 2008-02, 104,000 miles“I have a 2003 yukon Denali and when it hit the 65,000 miles mark the fuel gauge stopped working leaving me to tell how much gas I had left using the automatic computer telling you how many miles to empty. Next the oil gauges stopped working. Finally reaching 80,000 miles my speed odometer quite working leaving me to not knowing the speed I am traveling this quite working while I was driving down a highway. To make matters worse my rpms are starting to go goofy which means that to is going to stop working as well. …”
NHTSA complaint #10402393, filed 2011-05“I have a 2003 Gmc yukon Denali and the speedometer has stopped providing accurate speed readings. I can be traveling 10 MPH according to my GPS and the speedometer may read 100 MPH. This is random and frequent.”
NHTSA complaint #10171751, filed 2006-10Related service bulletins
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- 11002312Jun 6, 2024This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414…
- 10252735Mar 28, 2024This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
- 10244214Sep 21, 2023This informational bulletin provides information for the IPC odometer programming method quick reference guide.
- 10225615Oct 19, 2022This service bulletin provides information on Module Harvesting.
- 10190320Oct 1, 2017IPC Odometer Programming Method Quick Reference Guide
- 10083898Apr 27, 2016This preliminary information communication advises the technician if unable to place an onstar call in the ignition on mode after the onstar canada upgrade, to contact the gm…
- 10083484Apr 19, 2016This preliminary information communication provides information to help the dealership technicians perform a parasitic drain test for the onstar module. When performing battery…
- 10078735Apr 19, 2016This preliminary information communication provides information to help the dealership technicians perform a parasitic drain test for the onstar module. When performing battery…
- 10078734Apr 19, 2016This preliminary information communication advises the technician the steps on repairing the concern. A customer may identify a concern of unable to reactivate a vehicle's onstar…
Electrical system: other model years
Other parts of the 2003 GMC Denali
7 complaintsSteering
5 complaintsVehicle speed control
5 complaintsTransmission and drivetrain
3 complaintsElectronic stability control
2 complaintsEngine cooling
2 complaintsExterior lighting
2 complaintsAir bags
1 complaintsEngine
1 complaintsEquipment
1 complaintsFuel system
1 complaintsSeat belts
1 complaints
← All problems reported for the 2003 GMC Denali
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