Heated Seat Issues

[12345]

hi all,

 

i have a 2001 crew cab with power, memory and of course heated seats.i,m getting intermiitent seat heat.when i first start the truck and turn on the seats they do,nt come on.then i cycle the on low off button several times and then they sometimes run.they also sometimes seem wrong in there heat setting,low goes very hot and high seems like less heat.cycling the switch does,nt always get them working.they never come on with the first try apone starting the truck.i took the door panel off and replaced the door control switch...didn,t change a thing.i was sure it was the switch but i was wrong.

 

anyone have any suggestions?from what i gather these seats don,t have a bcm so i don,t know what to check next.are these seats controled by the main computer?

 

p.s i,ve tried the cycling of the switch just sitting in the drive way(to remove the vehicle motion)just incase,it always behaves the same.

 

thanks cj

[DofD]

Hi there and welcome to GM Trucks!

 

The first thing I would look at would be the switch itself. It sounds like it is a switch issue.

[12345]

Hi there and welcome to GM Trucks!

 

The first thing I would look at would be the switch itself. It sounds like it is a switch issue.

 

 

the switch has been replaced,no change behaves the same.

[Smitty00Z71]

same issue here with my 2002

[frankthetank]

the hi, low , medium relay may be flaky. find it under the hood and replace it. they usually arent much $$$$ if not it is probably the button, but hopefully not the wiring!!

[frankthetank]

the hi, low , medium relay may be flaky. find it under the hood and replace it. they usually arent much $$$$ if not it is probably the button, but hopefully not the wiring!!

[12345]

the hi, low , medium relay may be flaky. find it under the hood and replace it. they usually arent much $$$$ if not it is probably the button, but hopefully not the wiring!!

 

 

what relay would that be?there is no medium setting on these seats.it,s a 2001 it has no bcm o r any computer stuff.

 

i,ll see if there is some sort of seat heater relay though.

 

also(for the third time)the door button has already been replaced,it did not help.

thanks cj

[frankthetank]

the hi, low , medium relay may be flaky. find it under the hood and replace it. they usually arent much $$ if not it is probably the button, but hopefully not the wiring!!

 

 

what relay would that be?there is no medium setting on these seats.it,s a 2001 it has no bcm o r any computer stuff.

 

i,ll see if there is some sort of seat heater relay though.

 

also(for the third time)the door button has already been replaced,it did not help.

thanks cj

 

 

it should be in the black box by the master cylinder. the lid should contain a description of all the different relays and fuses

[norsemanberg]

i believe there is a module for the seats and that may have a problem.

[12345]

i believe there is a module for the seats and that may have a problem.

 

 

i wonder if it could be the fuse block in the engine compartment?seems to be the cause of many electric problems.

 

cj

[12345]

i believe there is a module for the seats and that may have a problem.

 

 

i wonder if it could be the fuse block in the engine compartment?seems to be the cause of many electric problems.

 

cj

 

 

 

m o v e i t u p

[bill190]

If all else fails...

 

I would get a factory wiring diagram and learn how the system works, see where all the components are located, which color wires, etc.

 

Then I would connect a multi-meter to various points starting on the switch and leave it there as I use the vehicle. If the switch is always supplying power as it should, then move it down the line to the next component. Etc.

 

This way you could "see" what is going on with the various components when this happens.

 

If it was something under the hood, I would just run wires say out an opening of the hood and through a partially open passenger’s side window to a mulitmeter in the vehicle.