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Home >> Cadillac >> 1998 >> DeVille Base >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat System >> Symptom Testing >> All Power Seat Functions Inoperative
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

All Power Seat Functions Inoperative

  1. Perform POWER SEATS SYSTEM CHECK  under TROUBLE SHOOTING. Go to next step.
  2. Operate horn. If horns operate properly, go to next step. Of horn does not operate properly, go to step 5).
  3. Check front and rear ashtray lamps. If lamps operate properly, go to next step. If lamps do not operate properly, go to step 6).
  4. Repair open in Red wire between splices located between maxi-fuse and seat relay module. Splices are located in body harness approximately 5.5 inches on the engine compartment side of firewall and under driver seat approximately 13 inches from breakout of ground wire. After repair is complete, go to POWER SEATS SYSTEM CHECK  under TROUBLE SHOOTING.
  5. Repair open in Red wire between splice and driver maxi-fuse. Splice is located in body harness approximately 5.5 inches on the engine compartment side of firewall. After repair is complete, go to POWER SEATS SYSTEM CHECK  under TROUBLE SHOOTING.
  6. Repair open in Black wire between splice and ground wire (wire comes off of driver seat relay module Light Green 6-pin connector C2 terminal "C"). See Fig 1 . Splice is located under driver seat approximately 2.5 inches from breakout of ground wire. After repair is complete, go to POWER SEATS SYSTEM CHECK  under TROUBLE SHOOTING.
    Fig 1: Identifying Seat Relay Module Connector C2 & C3 Terminals
    G98B01726Courtesy of GENERAL MOTORS CORP.