Thread: 1999 Pontiac Montana Heater Problem
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Old 02-26-2006, 10:39 AM
shogunl shogunl is offline
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Re: 1999 Pontiac Montana Heater Problem
Chances are pretty good that it is a thermostat. but make sure it is not leaky intake manifold gasket also.
Try to look for white/yellow peanut butter like substance on oil filler cap.
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