the engine heats up when ideling with ac on on 2004 GMC Savana 1500

turn ac off and it cools down

by in Dixmont, ME on August 22, 2012
2 answers
ANSWER by on August 22, 2012
Need to check fan clutch operation. The clutch controls fan blade speed. If the fan cluch has failed it will cause the symtom you discribe.
ANSWER by on August 22, 2012
See if there is an electric booster fan that may not working.

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