Disconnecting Procedure

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

CAUTION: Refer to BATTERY DISCONNECT CAUTION in Cautions and Notices,

Record all preset and theft codes from the radio.
Turn the ignition switch to the LOCK position.
Verify that all the electrical components are off such as interior lights, all doors are closed, the underhood lamp, etc.
Loosen the negative battery cable bolt.
Remove the negative battery cable (4) from the battery.
Position the negative battery cable away from any body ground.

Fig 1: Removing Negative Battery Cable From Battery
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