Installation Procedure

1999 Chevrolet Pickup C2500, 2D Pickup, 6.5 F, StandardSECTION Installation Procedure
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Important:  Align the mode door assist spring to the HVAC module case.

  1. Install the mode door (2).
    Fig 1: Installing Mode Door
    G01482188Courtesy of GENERAL MOTORS CORP.
  2. Install the air distribution case cover (2).
    NOTE: Refer to FASTENER NOTICE .
  3. Install the retaining screws (1) to the air distributor cover.

    Tighten 

    Tighten the screws to 1.5 N.m (13 lb in).

    Fig 2: Installing Air Distribution Case Cover & Retaining Screws
    G01482189Courtesy of GENERAL MOTORS CORP.
  4. Connect the mode actuator pushrod to the mode door lever.
  5. Position the mode actuator on to the mounting slides of the HVAC module assembly.
  6. Ensure that the lock tab locks the defroster actuator in place.
  7. Connect the vacuum lines to the mode actuator.
    Fig 3: Connecting Mode Actuator Pushrod To Mode Door Lever
    G01482190Courtesy of GENERAL MOTORS CORP.
  8. Install the cross vehicle beam to the vehicle.
    Fig 4: Installing Cross Vehicle Beam
    G01482191Courtesy of GENERAL MOTORS CORP.
  9. Install the bolts which secure the right cross vehicle beam to the hinge pillar.

    Important:  Do NOT tighten the bolts at this time.

    Fig 5: Installing Bolts Which Secure Right Cross Vehicle Beam To Hinge Pillar
    G01482192Courtesy of GENERAL MOTORS CORP.
  10. Install the bolts which secure the left cross vehicle beam to the hinge pillar.

    Tighten 

    Tighten the bolts to 20 N.m (15 lb ft).

    Fig 6: Installing Left Cross Vehicle Beam Bolts
    G01482193Courtesy of GENERAL MOTORS CORP.
  11. Install the bolt (1) to the cross vehicle beam.

    Tighten 

    Tighten the bolt to 20 N.m (15 lb ft).

    Fig 7: Installing Bolt To Cross Vehicle Beam
    G01482194Courtesy of GENERAL MOTORS CORP.
  12. Install the retaining bolts to the upper support brackets of the HVAC module.

    Tighten 

    Tighten the bolts to 10 N.m (89 lb in).

    Fig 8: Installing Retaining Bolts To Upper Support Brackets Of HVAC Module
    G01482195Courtesy of GENERAL MOTORS CORP.
  13. Install the HVAC module center support bracket.
  14. Install the retaining bolts to the center support bracket of the HVAC module.

    Tighten 

    Tighten the bolts to 10 N.m (89 lb in).

  15. Install the instrument panel wiring harness on to the cross vehicle beam and secure the retaining clips.
    Fig 9: Installing Retaining Bolts To Center Support Bracket Of HVAC Module
    G01482196Courtesy of GENERAL MOTORS CORP.
  16. Install the BCM bracket and the retaining bolts.

    Tighten 

    Tighten the bolts to 10 N.m (89 lb in).

    Fig 10: Installing BCM Bracket & Retaining Bolts
    G01482197Courtesy of GENERAL MOTORS CORP.
  17. Install the fuse block to the holder.
  18. Install the 2 screws below the fuse block that hold the main wire harness connector to the cross car beam.
    Fig 11: Installing Fuse Block
    G01482198Courtesy of GENERAL MOTORS CORP.
  19. Install the steering column support bracket to the cross vehicle beam.
  20. Install the steering column support bracket nuts and bolts.

    Tighten 

    Tighten the nuts and bolts to 50 N.m (37 lb ft).

  21. Install the brake pedal. Refer to BRAKE PEDAL ASSEMBLY .
  22. Connect all disconnected ground wires.
  23. Install the passenger side SIR inflator module. Refer to REMOVAL & INSTALLATION (PASSENGER-SIDE) .
    Fig 12: Installing Steering Column Support Bracket, Nuts & Bolts
    G01482199Courtesy of GENERAL MOTORS CORP.
  24. Install the right and left side air distribution ducts.
  25. Install the right and left side air distribution duct bolts.

    Tighten 

    Tighten the bolts to 1.5 N.m (13 lb in).

  26. Install the I/P trim pad. Refer to TRIM PAD REPLACEMENT - INSTRUMENT PANEL (I/P) .
  27. Connect the battery negative cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE .
Fig 13: Installing Right & Left Side Air Distribution Ducts
G01482200Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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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.