2003 GMC Envoy XL engine and engine cooling problems
12 owner complaints filed with NHTSA name the engine and engine cooling on the 2003 GMC Envoy XL — 5% of all complaints for this model year.
What owners report
“One of the oil cooler line on my 2003 gmc envoy is cracked and leaking transmission fluid on the cataylic converter. This is a serious fire hazard due to the extremely high temperature of the converter during normal operations. *kb”
filed Feb 4, 2012
“No events led up to failure. Exhaust manifold is cracked and leaking. Gmc envoy xl slt 6 liter. Have not yet received new part. Will be replacing this week. *tr”
filed Mar 6, 2010
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This bulletin advises the technician of possible location of an internal coolant leak from a specific cylinder head and location.
06-06-01-019C · Service Bulletin/Repair Instructions · issued Mar 14, 2024
Engine and Engine Cooling problems in other Envoy XL years
| Year | Reports | Share |
|---|---|---|
| 2006 Envoy XL | 4 | 4% |
| 2004 Envoy XL | 15 | 8% |
| 2002 Envoy XL | 4 | 6% |
Other reported problem areas on the 2003 GMC Envoy XL
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.