Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


fairly significant
Typical Repair Cost:
Average Mileage:
92,333 miles
Total Complaints:
3 complaints

Most Common Solutions:

  1. replaced electronic fan clutch (2 reports)
  2. not sure (1 reports)
2003 GMC Envoy cooling system problems

cooling system problem

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2003 GMC Envoy Owner Comments

problem #3

Jun 242013

Envoy SLE 4.2L V6

  • Automatic transmission
  • 122,000 miles


This seems to be a common problem. Part itself is expensive. Should be a recall.

- , Los Angeles, CA, USA

problem #2

Sep 112007

Envoy SLT 4.2L I-6

  • Automatic transmission
  • 31,000 miles

What a poorly made vehicle! I will randomly hear clicking/knocking noises from my engine and thought the engine was bad! Soon after that the "service engine soon" lit up! As I was driving it to the dealer the fan clutch broke off damaging other parts and disabling the vehicle. 4years later the clutch goes out again, and now just stays running! Do not buy this junk!

- , San Jose, CA, USA

problem #1

Jun 302011

Envoy XL 4.2L V6

  • Automatic transmission
  • 124,000 miles

The fan began to run at all times sounding like I was about to take flight. Loud and very annoying, causes the service engine light to come on. It also causes the truck to run too cool. Replaced the fan clutches and it fixed the problem temporaily. I have replaced the clutches 3 times along with the water pump and it is roaring again! I need help finding the real solution to the problem

- , Ripley, TN, USA

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