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Old November 10th, 2009, 01:29 PM   #1
Goob
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Default Tahoe power seats died?

We have an '04 with the power heated seats. They quit working last week. We replaced the circuit breaker in the fuse box by the break pedal but no worky. It looks like all the plugs under the seat are plugged in. Any suggestions where to look next? Where can I check to see if power is going to the seats?
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Old November 10th, 2009, 04:34 PM   #2
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I dont know that particular vehicle, but generally power seats have a single connector underneath with 2 larger wires for positive and ground...I'll look for a schematic...

*edit* forgot about these having the seat memory positions, so there are multiple controllers involved, at least the driver door module and the memory seat module, both of which have thier own power circuits, not to mention the seat power circuit, and the heat power circuit, and I think the control system has a seperate power circuit...with such limited information on such a diverse system, its hard to help with any diagnostic without being there...go here:

https://elibrary.mel.org/validate?ur...ch%3Fdb%3DCHLL

put in your D.L. or I.D. number, find the schematics, and check what you can...post back when you have some more info...

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Old November 10th, 2009, 04:40 PM   #3
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Right under your seat, there should be two wires for ground and power, not to sure what color exactally but test those for power to the seats, it should be constant power even when they keys off

and it's most likley the ground is bad
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Old November 10th, 2009, 07:19 PM   #4
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Thanks for the link. Some of the images aren't coming up so I'll keep trying. Part of the problem is that right under the seat is a whole bunch of wires and I can't see which is the main power or ground.
Is there a way to check the circuit breaker with a meter? I don't know the one we replaced was bad to start with.
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Old November 10th, 2009, 10:06 PM   #5
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you can test for continuity (ohms, or resistance) across teh two terminals of the circuit breaker...if it is a closed circuit, then the current can go through it...

of course, that does not mean the c.b. is good, and will actually protect the circuit as designed, but that isnt your problem right now anyway...
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