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Doesn't have a fuse for power seats . Use's a circuit breaker , 25 amp circuit breaker PWR SEAT located in rear fuse box . This rear fuse box is under the back seat . Did you look under the seat to see if something is blocking the seat tracks ? Does the vehicle have memory seats ?
There are bulletins for this. Do ohms test on heating element. The bulletin mentions a couple of codes, B2425 and B2430. The bulletin mentions modules were replaced as a fix and nothing wrong with modules.
You have probably burnt up the element as it is a 17 year old seat now. The elements are replaceable, but the labor is pretty spendy. To test it you will need a multimeter to check for continuity across the connectors that go to the seat heating elements and check for voltage at the car side of the connector. If you have 12v to one side of the connector and continuity to ground at the other side, and do not have continuity to the seat side between the connectors, you know it is a bad element.
The module for the heated/cooled seats is underneath the front passenger seat. Buick had a problem with poor contact on the connector plug resulting in a melted connector. The module is mounted to the bottom of the seat and although it's tight, you can remove the two nuts holding it in place and pull it out to the front of the seat to access the connectors (there are 3). I had a burned connector on the biggest connector. I found a replacement connector (12-cavity) and terminals on eBay and just finished wiring the new connector. Results are disappointing because the driver's seat still doesn't work and the passenger's seat doesn't work all the time. Guess it's time to invest in a new module.
The following checks and repairs can help you:
1. In the fuse box within the bonnet - check fuse number 22, if burnt, replace it
2. Check fuse 19 in the fuse box inside the car located under the dashboard on the driverside
3. If these steps don't help, the problem may be with the wiring and connection between the module and the seat cushion - inspect it
4. Check if the signal return on the circuit is adequately functioning - if the module is being informed of an active seat
5. If there is a problem - repair or replace the circuit and/or wiring.
I have a 2001 and just replaced the fuel pump assembly in the tank because the fuel gauge didn't work or worked irratic. After talking to the partsman it sounded like this was common. The contact for the sensor wears away and looses contact. You will see that the new fuel pump module has different type of metal wiper contact. As for the heated seats, I have an issue with driver side also and haven't had a chance to look into it yet.
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