There are 2 owner-reported engine complaints for the 2009 GMC Envoyin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2009 GMC Envoy. The contact stated that while driving at an undisclosed speed, the service stabili-trak warning light illuminated. The contact stated that while depressing the accelerator pedal, the vehicle filed accelerate as intended. The contact stated that the failure occurred intermittently. The vehicle was taken to an independent mechanic, but the failure could not be duplicated. Additionally, the contact stated that the battery was drained. The contact stated that the failure had occurred several times previously. The contact stated the battery was charged. The vehicle was taken to an independent mechanic where it was diagnosed with a peracetic battery drain, the battery needed to be replaced. The vehicle was repaired. The failure reoccurred. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 145,000.
ONLY 8 YEARS OLD AND 140,000 MILES THE EXHAUST MANIFOLD HAS CRACKED ALLOWING EXHAUST FUMES TO ENTER THE INTERIOR OF THE CAR. I HAVE HAD NO ACCIDENTS WITH THIS CAR AND I SEE NO REASON WHY THE MANIFOLD SHOULD CRACK. I HAVE HAD CARS LONGER THEN THIS THAT NEVER HAD THIS PROBLEM. MANIFOLDS SHOULD NOT JUST CRACK.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026