Well, the valves seem to have solved the problem for me. No overheating.
I wish this were the case with me.I took the TSB into the Dealership, told them this was happening to my car. They ordered the parts, and installed them when they showed up.
Good Service and Good Folks. Payton GM in Heber Springs, AR. :thumbs:
Can you share your source for the check valves?don't wanna deal with the hassle of the dealer, and can get the valves elsewhere for $10/each. any installation instructions i can reference, or is it very straightforward? plug-n-play, splicing/soldering, coolant flush required after, what's the low down?
Doesn't look like they bled it properly, btw what was gm's bill for the loaner?However, before I got home the car overheated again and I got mild air coming out of the heater vents. This happened while I was waiting at a red light for 12 minutes (rush hour and icy roads). Once I got going again the temp came back down and was fine the rest of my trip. I'll be watching it carefully the next few days to see if today's event was a fluke or still a problem.