heater blows cold, when cold

Asked by GuruDDF341 Oct 29, 2023 at 08:18 PM about the 2011 RAM 1500 Laramie Crew Cab 4WD

Question type: Maintenance & Repair

dual control climate system. works normally when temperatures are above
freezing. below freezing it blows cold air no matter the function. defrost or heat
it blows cold. put a small heater in the cab to keep it warn inside and heater will
work normally. let it get cold inside the cab and it blows cold air. changed
control module and it behaves the same. anyone have any ideas?  

3 Answers
311,225

Gene answered about a year ago

Dual control systems will have codes stored, so you need to find a shop that can get those out of the system, repair it then reset the system, you just can’t throw parts on it and expect it to work without a system reset.

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20

PREMIER answered about a year ago

Check to see if you have an interior temperature sensor. Make sure the intake for it is clear.

2 people found this helpful.
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