Power seats not working

Tiny
SPENCER BRYCE
  • MEMBER
  • 1995 CHEVROLET 1500
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 270,000 MILES
The power seats do not work. They do not make any noise to signify they are working. Could it be a fuse or something that is not making the seat work?
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Saturday, November 17th, 2018 AT 5:15 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Thanks for using 2CarPros.com.

The first thing I would check is if there is power to the switch. Power is provided to the seat via a circuit breaker and not a traditional fuse. In the vehicle, locate the fuse box. Circuit breaker A is the one that powers it. See pictures 1 and 2. Also, here are links that shows how to use a test light and how to test wiring:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-check-wiring

Now, there was a technical service bulletin (TSB) which indicated a wiring problem. Basically, the wiring harness located under the seat would get damaged from the seat moving. Here is the bulletin and picture 3 attached correlates with the TSB:

______________________

File In Section: 8 - Chassis/Body Electrical

Bulletin No.: 76-81-09

Date: June, 1997

INFORMATION

Subject:
Driver's Power Seat

Models:
1995 Chevrolet and GMC C/K Models
with Driver's Power Seat (RPO AG9 & AE7 or A95)

Some owners may report the driver's power seat is inoperative.

The power seat wiring between the seat operating switches and the seat motors is bundled together with tape on vehicles manufactured before 3/13/95. Normal use of the seat may cause movement of the wire bundle against the seat frame or the seat suspension wires. Vehicles manufactured after that date have a protective conduit.

When making any repair to the driver's power seat, inspect the power seat wiring between the seat operating switches and the seat motors (see Figure 1), for signs of damage to the tape or insulation. Repair any damaged wire/s following the procedure described in Section 8A (Electrical Diagnosis Repair Procedures) of the 1995 C/K Truck Service Manual. In addition, install protective wire conduit, P/N 8919355, cut to required length, over the wires so that it extends past the seat frame edge. Tape the conduit at both ends to secure it properly. Nylon conduit material, 0.50" (13 mm) diameter may be procured locally if this part number is not readily available.

___________________

Picture 4 shows a schematic of the wiring.

Please feel free to ask questions if you have them. I hope this helps.

Take care,
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Saturday, November 17th, 2018 AT 8:23 PM

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