I have the exact same problem with my 2007 Siverado that started two days ago.
Per a check using a had-held computer at my local Chevy dealer, the engine is NOT overheating. (Temp read 183 when checked) Also not getting any error codes that identify the problem.
Mechanic at the dealer couldn't identify the problem either. Would rather not pay him $$$$$$ to fix the issue by trial and error!
Thursday, January 14th, 2010 AT 4:17 PM