2017 GMC Sierra Denali Electrical system Problems
- Complaints
- 1about this part
- Share
- 7%of 15 total for the year
- Median mileage
- 186,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the electrical system of the 2017 GMC Sierra Denali, 7% of the 15 complaints for this model year. Where a mileage was given, the median is 186,000 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 contact owns a 2017 GMC Sierra Denali 2500. The contact stated that while driving 25 MPH downhill, the message “Reduced Engine Power” was displayed. While the message was displayed, the trailer brakes and exhaust brake became inoperable, and the braking distance increased. The failure mileage was approximately 186,000.”
NHTSA complaint #11768606, filed 2026-10, 186,000 milesRelated service bulletins
- 11017595Apr 3, 2025This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
- 11017244Mar 31, 2025The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other…
- 11017207Mar 21, 2025This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414…
- 11017031Mar 12, 2025This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
- 11014230Jan 31, 2025This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
- 11013069Jan 9, 2025This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- 11012929Jan 7, 2025This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- 11011805Dec 6, 2024This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
- 11010421Oct 3, 2024This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- 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…
Electrical system: other model years
Other parts of the 2017 GMC Sierra Denali
3 complaintsTransmission and drivetrain
3 complaintsEngine
2 complaintsAir bags
1 complaintsEngine cooling
1 complaintsEquipment
1 complaintsExterior lighting
1 complaintsSeat belts
1 complaintsSuspension
1 complaintsWheels
1 complaints
← All problems reported for the 2017 GMC Sierra Denali
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