1996 GMC Jimmy 6 cyl Four Wheel Drive Automatic
Temperature gauge only seems to go to 160 even after installing a new thermostat. Heat is only luke warm at best. Is there any other valve in the system that controls coolant to the heater core? Is the engine temp not high enough and what else can we look for besides the thermostat?
The engine was replaced this summer, and the heat worked great last winter.
Friday, October 24th, 2008 AT 5:16 PM