All Power Seat Functions Inoperative
- Disconnect power seat switch connector. Connect test light between ground and power seat switch harness connector terminal "A" (Orange wire). See Fig 1
. If test light comes on, go to next step. If test light does not come on, go to step 3).
- Connect test light between power seat switch harness connector terminals "A" (Orange wire) and "D" (Black wire). If test light comes on, go to step 4). If test light does not come on, go to step 5).
- Using test light, backprobe between ground and Left Instrument Panel (LH I/P) junction block 30-pin connector C3 (Black) terminal A8 (Orange wire). See Fig 2
. LH I/P junction block is located under left side of instrument panel. If test light comes on, go to step 6). If test light does not come on, go to step 7).
- Replace power seat switch. See POWER SEAT SWITCH under REMOVAL & INSTALLATION. Recheck system operation.
- Repair open in Black wire between power seat switch and ground splice pack G301. Recheck system operation.
- Repair open in Orange wire between power seat switch and LH I/P junction block connector C3. Recheck system operation.
- Replace LH I/P junction block. Recheck system operation.
Courtesy of GENERAL MOTORS CORP.
Courtesy of GENERAL MOTORS CORP.