Disabling System (Econoline)

1999 GMC Forward Control 5.7 R, AutomaticSECTION Disabling System (Econoline)
WARNING: This page does not describe the selected car, but rather 102 other vehicles, including the 2002 Saturn Vue, 2002 Saturn SL2, 2002 Saturn SL1, 2002 Saturn SL, and 2002 Saturn SC2. However, it is still accessible from the selected car via links, so may be relevant.
  1. Record radio preset frequencies for reprogramming (if equipped). On gasoline engines with single battery, disconnect negative battery cable. On gasoline engines with dual batteries, also disconnect auxiliary battery negative cable (on right frame rail). On diesel engines, disconnect primary battery negative cable. Disconnect and INSULATE primary battery positive cable.
    WARNING: On diesel engines with dual batteries, the primary battery positive cable remains energized after it is disconnected.
  2. On all models, wait at least one minute for backup power supply to deplete stored energy. Remove driver air bag module. See DRIVER AIR BAG MODULEΒ . Connect appropriate air bag simulator to clockspring connector at top of steering column (in place of air bag). See AIR BAG SIMULATORΒ .
  3. Remove finish panel on lower right side of dash panel. Using screwdriver under lower right edge of door, CAREFULLY lift up air bag door on right side of dash. See Fig 1. Remove passenger air bag module nuts. Slide passenger air bag module out and disconnect air bag module electrical connector. Connect appropriate air bag simulator to passenger air bag vehicle harness connector (in place of air bag). See AIR BAG SIMULATORΒ . Reconnect all battery cables.
    Fig 1: Disconnecting Passenger Air Bag Module (Econoline)
    G98B08167Courtesy of FORD MOTOR CO.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

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

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