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Old 01-04-2007, 03:39 AM   #12
WorkinLonghorn
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Join Date: Dec 2006
Location: Studio City, Calif.
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Re: 1969 C-10 Heater question

[QUOTE That ended up giving us "luke warm" air after running the truck for :30 minutes.][/QUOTE]
Check that the truck has a thermostat mounted and that it is not stuck open. Some uninformed owners remove this in the belief that this will keep the truck from overheating.If there is no thermostat then the coolant may not be hot enough to heat the air fully in the heater.-cougar.
GMC '69 Custom Camper
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