Seat heater

[densonfrnc]

they will not heat up nor will the display light on the switch. If I turn the iignition on and off they eventually come on

[Luv2Camp]

Assuming you are not trying to get them to go on while the vehicle is not started? They will not come on unless the engine is running to avoid rapid battery drain.

[densonfrnc]

No it is running its just sometimes they come on and sometimes they dont

[justdanorm]

Originally Posted by densonfrnc

No it is running its just sometimes they come on and sometimes they dont

And they both react the same way? Or are you only trying the one side?

What about the back?

If they both react the same way its doubtful both are faulty at the same time, although coincidentally, it could happen.
Probably the switch not working right or you are doing something wrong.

Read the manual again to make sure you aren't pressing the back heater, then the back and butt heather or you are pressing it three times and shutting it off and thinkings it not working.

Sorry, just without seeing it personally its hard to figure out whats wrong other than "user error". No offense.

[densonfrnc]

Its either all or none. If they work the front and back work if not none of them do

[justdanorm]

Then maybe fuse? I'm not sure if they're all on the same fuse. Other than that it could only be an electrical problem in the whole truck.

[etmyers]

Not any help but I had the same issue in a Suburban. Never did figure it out but same symptoms. Eventually they worked again without issue. My only guess was that I had either a self curing short or water issue?