Having problems with your 2006 Buick Rendezvous ?
How do you know if the thermostat is bad 2006 rendezvous? I was told the problem code was P0128 because the "service engine soon" light was on and that the thermostat should be replaced. It's off now so does it really need to be replaced? Or what else could it be?
It was stuck open at one point. You should replace it, this is a fairly common problem on the the 3.4 and the 3.8 motors.
Repair Help & Product Troubleshooting for 2006 Buick Rendezvous
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