MY HEATER WONT GO FROM HOT TO COLD

Asked by Jun 23, 2017 at 04:46 PM about the 1994 GMC Sierra 1500 C1500 SL Extended Cab SB

Question type: Maintenance & Repair

DUS NOT GO FROM HOT TO COLD ITS ON HOT ALL THE TIME

1 Answer

905

Possible blend door issue. Also have a look at your freon pressures high and low sides. Proper pressures will vary with ambient temp outside.

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