Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 696 (INSTRUMENT PANEL, GAGES, AND CONSOLE)REPAIR INSTRUCTIONSLOCK CYLINDER REPLACEMENT - INSTRUMENT PANEL (I/P) COMPARTMENTINSTALLATION PROCEDURE

1999 GMC Forward Control 5.7 R, Automatic

Installation Procedure

1999 GMC Forward Control 5.7 R, AutomaticSECTION 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.

Position the IP compartment latch fork bolt in the UP position.
Grasp the IP compartment lock cylinder. Depress the rear-most, light-colored tumbler that is flush with the IP compartment lock cylinder surface.
Insert the key.
All the tumblers will now stay depressed.
Insert the IP compartment lock cylinder, with the key inserted, into the IP compartment latch housing. Ensure that the front projection pin is at the appropriate 8 o'clock position.
The IP compartment lock cylinder will drop into place.
Rotate the key counterclockwise until the key stops.

Fig 1: Inserting Instrument Panel Compartment Lock Cylinder Into Instrument Panel Compartment Latch
Courtesy of GENERAL MOTORS CORP.
Remove the key, the tumblers will now release.
The IP compartment lock cylinder is now locked into the IP compartment latch housing.
Install the IP compartment latch. Refer to LATCH REPLACEMENT - INSTRUMENT PANEL (I/P) COMPARTMENT .

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.