hey... i am having a problem with my heater staying on in my pickup after the truck is turned off and the key taken out. i hear some clicking noises and sounds like something is grounding out under the dash. i found a box holding 2 relays under the dash above the gas pedal and i think this is where the noise is comming from. i was wondering if someone could tell me what they are?? and what the purpose of them is?

Pictures attached

 

anyone????????

 

Figure this out? I have this same issue, the noise is driving me nuts. It keeps happening hours after the truck has been turned off.

 

yes.... i changed out the black relay that u see in the picture its located under the steering colum covered with a black casing. it fixed the problem.

hope this helps