The coolant reservoir is on the left(drivers) side of the engine compartment, between the left strut tower and the firewall. I have yet to see one of these overheat, what were the conditions under which it happened? If you had lost coolant, it should have given a check coolant message. Where there any warning signs other that it going to idle?
July, 18, 2011 AT 12:37 AM
No warning at all. A/C was off. This happen in Riverside Ca weather 93 degrees
July, 18, 2011 AT 12:45 AM
What did the gauge read? How did you determine it was an overheat?
July, 18, 2011 AT 12:48 AM
No warning at all. A/C was off. This happen in Riverside Ca weather 93 degreesNo warning at all. A/C was off. This happen in Riverside Ca weather 93 degrees
July, 18, 2011 AT 12:51 AM
The gauge shot up less than 45 seconds. Then the car read. Overheating and went into idle to protect it
July, 18, 2011 AT 12:57 AM
Something so sudden like that, I would be suspicious first of all, that it was truly overheating, and not just something falsely registering. If the coolant level is full, check the belt(although if it failed you would have lost power steering). The thermostat is on the rear of this engine, a real bear to get to. That would be another place to check.
July, 18, 2011 AT 1:01 AM
I do see a little leak
July, 18, 2011 AT 1:04 AM
Another thing to consider, is the vehicle still should have powertrain warranty to 100k. Your owners manual will shed some light on what is defined as 'powertrain', but it may be warrantible. On the earlier 3.6, the water pump was known to leak, I don't know as though the pump changed on a 2008.
July, 18, 2011 AT 6:57 AM
Thanks for all ur help going to have it towed to the dealer
August, 13, 2015 AT 11:05 PM
I know it was a long time ago when this issue happened to your CTS, but my 2008 3.6L DI CTS4 just had the exact same sudden over heating occur, and their is a slight leak of clear water looking liquid. I was just wondering if you remember what the dealer found out was wrong?