2001 GMC Denali Electrical system Problems
- Complaints
- 2about this part
- Share
- 9%of 22 total for the year
- Median mileage
- 62,326miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the electrical system of the 2001 GMC Denali, 9% of the 22 complaints for this model year. Where a mileage was given, the median is 62,326 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.
“While driving about 55 MPH vehicle stalled. Consumer restarted vehicle and was able to pull over to the shoulder. Had the vehicle towed to the dealer for analysis. The vehicle would be idling and would die. The dealer could not diagnose the problem but knew it had something to do with fuses. The dealer diagnosed the problem and replaced the electronic throttle control module. About a month and a half later the vehicle stalled again without warning while approaching an incline and a curve. The consumer was able to pull onto the shoulder. The consumer request that this problem be investigated.”
NHTSA complaint #10046359, filed 2003-11, 34,651 miles“The contact owns a 2001 Gmc Denali. Everytime the vehicle undergoes a routine oil change, the contact has to place an excessive amount of oil back in the engine shortly afterwards. In addition, the battery terminal cables sporadically loosen and cause the alternator to fail. Thirdly, while driving at various speeds, the 4 wheel drive spontaneously engages. Lastly, the vehicle idles roughly when it is started. The vehicle was taken to the dealer on numerous occasions, but they could not correct the failure. The contact has copies of the vehicle's service history. …”
NHTSA complaint #10231471, filed 2008-06, 90,000 milesRelated service bulletins
- 11006621Aug 26, 2024Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which…
- 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…
- 10225615Oct 19, 2022This service bulletin provides information on Module Harvesting.
- 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…
- 10083900Apr 8, 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…
- 10190512Dec 1, 2015OnStar® Voice Fallback Number Update Some customers may have received a letter from OnStar® stating that "We recently tried to provide a software update to the OnStar® hardware…
Electrical system: other model years
Other parts of the 2001 GMC Denali
6 complaintsTransmission and drivetrain
5 complaintsEngine cooling
3 complaintsFuel system
3 complaintsSteering
3 complaintsAir bags
2 complaintsExterior lighting
1 complaintsOther or unknown
1 complaintsSeat belts
1 complaintsSeats
1 complaintsBody and structure
1 complaintsSuspension
1 complaints
← All problems reported for the 2001 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