thermostat problems on 2003 Chevrolet Venture

temp gauge goes up and down. cooling fans go on. how hard is it to remove thermastat on this van without taking half tha engine apart.

by in Pinole, CA on October 20, 2012
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1 answer 1 comment
ANSWER by , October 21, 2012
if the temp gauge goes up and down chances are you have got a head gasket leaking
COMMENT by , October 21, 2012
if the h/gasket is leaking would there not be water on the ground because there is none. can this be verified be pressure testing?