HOW DO i FIX MY HEATER ITS HOT ALL THE TIME

Asked by Jun 23, 2017 at 05:27 PM about the 1994 GMC Sierra 1500 C1500 SL Extended Cab SB

Question type: Maintenance & Repair

HOW DO i FIX IT  ???

1 Answer

73,985

I don't think your truck has a heater control valve so it is probably a blend door issue. However you can install an inline valve in a heater hose and turn the flow of hot water off.

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