Automatic Transmission Range Selector Cable Adjustment

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Ensure that the steering column shift lever and the transmission manual shaft lever are in the park (P) position.
Raise and suitably support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
Pull back the white plastic cover (1) on the center connector.

Fig 1: Removing Plastic Cover On Center Connector
Courtesy of GENERAL MOTORS CORP.
Pull up on the center tabs of the lock button (2).

Fig 2: Lock Button Tabs
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: This step must be performed correctly to avoid a misadjusted cable. Do not grasp the shift cable end (2) during this procedure.
Release the shift cable end (2) and allow the blue spring to tension/adjust the shift cable system.
Pull the white cover (3) on the shift cable end (1) back.

Fig 3: Shift Cable End & Cover
Courtesy of GENERAL MOTORS CORP.
Push the natural colored lock button (2) down to engage the locking teeth on the shift cable end (1).

Fig 4: Lock Button & Shift Cable End
Courtesy of GENERAL MOTORS CORP.
Release the white cover (1).

Fig 5: Releasing White Cover
Courtesy of GENERAL MOTORS CORP.
Verify the white cover (1) conceals the natural colored lock (2).
If the white cover (1) does not conceal the natural colored lock (2), the shift cable must be readjusted.
Test the transmission for proper shift operation.
If all of the gear positions cannot be achieved, the shift cable must be readjusted.

Fig 6: White Cover & Natural Colored Lock
Courtesy of GENERAL MOTORS CORP.