On a 2012 I would hope that the heater core is not blocked. You can flush it out. Low coolant? Air in the system? Does truck run colder on temp guage? Have you had thermostat changed? Heater control door actuator broke or stuck in the closed stage? This could be it due to the A/C now working good. With it closed it is now on the cool/cold setting
6 months ago, AC did not always work. Now AC works good, but heater does not get hot???
2012 RAM 1500 SLT Crew Cab 4WD
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Maintenance & Repair
Have an 2012 ram 1500 will not start. Ture the key and there is clicking in the fuse box. All light come on the dash and dome light comes on when opening the door. Bother in-law says it could be th...
2012 RAM 1500 Express Quad Cab 4WD
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Maintenance & Repair
have a 2012 1500 outdoorsman (similar to tradesman) with the 5.7hemi and I changed out the MAP sensor, Intake air temp sensor, O2 sensors (all OEM parts replacement), was about to do the PCV valve. I ...
2012 RAM 1500 Outdoorsman Crew Cab 4WD
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Maintenance & Repair
Will a 2013 ram 1500 front bumper fit on a 2012 ram 1500?
2012 RAM 1500 Express Crew Cab
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Maintenance & Repair
My 2012 dodge ram leramie longhorn 5.7l hemi stalls out of a morning when i crank it idles fine but just randomly shuts off going down the highway mainly while not giving it much gas or at redlight...
2012 RAM 1500 Laramie Longhorn Crew Cab
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Maintenance & Repair
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