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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 4.3 W, STANDARDREPAIR AND DIAGNOSISBODY & FRAMESEATSPOWER SEAT SYSTEMTROUBLE SHOOTINGPOWER SEAT SYSTEM CHECK
1999 GMC Forward Control 4.3 W, Standard

Power Seat System Check

1999 GMC Forward Control 4.3 W, StandardSECTION Power Seat System Check
  1. Move seat adjuster switch in any direction. Seat should move in direction selected. If seat does not move in any direction, see POWER SEAT INOPERATIVE  under SYMPTOM TESTS.
  2. Move seat adjuster switch to forward and rearward positions. Seat should move in direction selected. If seat does not move in these directions, go to POWER SEAT DOES NOT MOVE FORWARD OR REARWARD  under SYMPTOM TESTS.
  3. Move seat adjuster switch to move front of seat up and down. Seat should move in direction selected. If seat does not move in these directions, go to POWER SEAT DOES NOT MOVE VERTICALLY  under SYMPTOM TESTS.
  4. Move seat adjuster switch to move rear of seat up and down. Seat should move in direction selected. If seat does not move in these directions, go to POWER SEAT DOES NOT MOVE VERTICALLY  under SYMPTOM TESTS.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.