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Rear power windows problem

DBRAV1

By DBRAV1
in Ask A GM Technician

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DBRAV1 New Member

DBRAV1

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The rear power windows on my 2000 Tahoe don't work. Fronts work fine and relay clicks on the back doors, but nothing happens. Is this possibly a bad window lockout switch, or is there a relay somewhere I don't know about?

GM-Tech Senior Enthusiast

GM-Tech

Posted
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If you hear the relays click in the back doors, it could very well be bad motors. Yeah, seems odd that you'd have two that'd be out at the same time, but it's possible.

 

Pull one of the rear switches out and check for power/ground on connector terminals A and B. A is a dark blue wire (there are two dark blue wires in the connector so make sure you're in terminal A) and B is brown.

 

Operate the switch UP and you should have power coming out of one of those two wires. Operate the switch DOWN and power will then come out of the other wire. Wouldn't hurt to check ground (same way). If you have power and ground then it's the motor or its connections.

Frank Sub Enthusiast

Frank Sub

Posted
Posted

Hi DBRAV1--I've had 3 rear window motors replaced on my 2001 Suburban, fortunately all on warranty. Dealer said they were all shorted, and get shorted due to lack of use.--Frank Sub

DBRAV1 New Member

DBRAV1

Posted
  • Author
Posted
If you hear the relays click in the back doors, it could very well be bad motors.  Yeah, seems odd that you'd have two that'd be out at the same time, but it's possible.

 

Pull one of the rear switches out and check for power/ground on connector terminals A and B.  A is a dark blue wire (there are two dark blue wires in the connector so make sure you're in terminal A) and B is brown.

 

Operate the switch UP and you should have power coming out of one of those two wires.  Operate the switch DOWN and power will then come out of the other wire.  Wouldn't hurt to check ground (same way).  If you have power and ground then it's the motor or its connections.

 

 

 

DBRAV1 New Member

DBRAV1

Posted
  • Author
Posted
If you hear the relays click in the back doors, it could very well be bad motors.  Yeah, seems odd that you'd have two that'd be out at the same time, but it's possible.

 

Pull one of the rear switches out and check for power/ground on connector terminals A and B.  A is a dark blue wire (there are two dark blue wires in the connector so make sure you're in terminal A) and B is brown.

 

Operate the switch UP and you should have power coming out of one of those two wires.  Operate the switch DOWN and power will then come out of the other wire.  Wouldn't hurt to check ground (same way).  If you have power and ground then it's the motor or its connections.

 

 

 

 

 

Thanks for the input. I pulled the door panels and checked the power and it is getting to the motor, so I guess I'm in the market for new motors. I bought this truck used and the previous owner said no one ever rode in the back so the windows weren't used much. I was hoping for an easier fix, but at least it is narrowed down now.

DBRAV1 New Member

DBRAV1

Posted
  • Author
Posted
Hi DBRAV1--I've had 3 rear window motors replaced on my 2001 Suburban, fortunately all on warranty.  Dealer said they were all shorted, and get shorted due to lack of use.--Frank Sub

 

 

 

 

 

Thanks - I think I have the same issue as I bought this truck used from an older woman who rarely had people in the back seat. I've never heard of shorting out from lack of use, but the motors are definitely not working.

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