GM Service Manual Online
For 1990-2009 cars only

Fusible Link

    • Inspect link for damage or discoloration
    • Test for battery voltage on both ends of link
    • Replace with same size fusible link (wire-gauge size printed on insulation)

Ignition Switch Continuity

Important: Key-minder circuit is open until ignition switch is cycled.

Neutral Safety Backup Switch (NSBU)

  1. Disconnect neutral safety backup switch (NSBU).
  2. Using DVOM, check for continuity between terminals G and E on the NSBU switch when vehicle is in Park or Neutral position.

Clutch Start Switch (Manual)


    Object Number: 892027  Size: SH
  1. Disconnect clutch start switch electrical connector.
  2. Use a fused jumper wire to bypass switch by connecting terminal A to terminal B.
  3. Important: Switch is faulty if engine cranks normal.