2003 GMC Yukon XL 1500 electrical system problems
24 owner complaints filed with NHTSA name the electrical system on the 2003 GMC Yukon XL 1500 — 38% of all complaints for this model year.
What owners report
“Vehicle randomly goes into reduce engine power mode and stalls while driving. This has happened multiple times while driving on a highway and going up a hill where it nearly caused a three catastrophic accidents. Basic research shows that gm has known about this issue since the vehicles were a few…”
filed Dec 12, 2017
“Tl* the contact owns a 2003 gmc yukon xl 1500. The contact mentioned that the previous owner of the vehicle experienced a failure with the reduced engine power warning indicator. The dealer replaced the throttle body, but the failure continued before the contact owned the vehicle. The contact…”
filed Jun 16, 2016
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.
23-NA-001 · Service Bulletin/Repair Instructions · issued Mar 28, 2025Vehicle 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 modules need updating and then proceed to…
General Communication · Service Campaign · issued Aug 26, 2024This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and…
24-NA-098 · Service Bulletin/Repair Instructions · issued Jun 6, 2024
Electrical System problems in other Yukon XL 1500 years
| Year | Reports | Share |
|---|---|---|
| 2007 Yukon XL 1500 | 11 | 18% |
| 2005 Yukon XL 1500 | 10 | 42% |
| 2004 Yukon XL 1500 | 18 | 50% |
| 2002 Yukon XL 1500 | 2 | 9% |
| 2001 Yukon XL 1500 | 1 | 3% |
Other reported problem areas on the 2003 GMC Yukon XL 1500
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.