Battery Negative Cable Disconnection and Connection

Battery Negative Cable Disconnection and Connection

Disconnecting Procedure

Warning

Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

For Vehicles equipped with OnStar(R) (UE1) with Back Up Battery:

The Back Up Battery is a redundant power supply to allow limited OnStar(R) functionality in the event of a main vehicle battery power disruption to the VCIM (OnStar(R)module). Do not disconnect the main vehicle battery or remove the OnStar(R) fuse with the ignition key in any position other than OFF. Retained accessory power (RAP) should be allowed to time out or be disabled (simply opening the driver door should disable RAP) before disconnecting power. Disconnecting power to the OnStar(R) module in any way while the ignition is On or with RAP activated may cause activation of the OnStar(R) Back-Up Battery (BUB) system and will discharge and permanently damage the back-up battery. Once the Back-Up Battery is activated it will stay on until it has completely discharged. The BUB is not rechargeable and once activated the BUB must be replaced.

Warning

Batteries produce explosive gases. Batteries contain corrosive acid. Batteries supply levels of electrical current high enough to cause burns. Therefore, in order to reduce the risk of personal injury while working near a battery, observe the following guidelines:

* Always shield your eyes.
* Avoid leaning over the battery whenever possible.
* Do not expose the battery to open flames or sparks.
* Do not allow battery acid to contact the eyes or the skin.

- Flush any contacted areas with water immediately and thoroughly.
- Get medical help.





1. Record all preset and theft codes from the radio.
2. Turn off all lamps and accessories.
3. Turn the ignition switch to the LOCK position.
4. Open the negative battery cable cover.
5. Loosen the negative battery cable nut (2).
6. Remove the negative battery cable (1) from the battery. (regular production option (RPO) LLR shown, RPO LH8 similar).

Connecting Procedure




1. Clean any existing corrosion from the battery terminal and battery cable (1) using a wire brush.
2. Install the negative battery cable (1) to the battery. (RPO LLR shown, RPO LH8 similar).

Caution: Refer to Fastener Caution (Fastener Caution).

3. Tighten the negative battery cable nut (2) to 9 Nm (80 lb in).
4. Close the negative battery cable cover.
5. Reset all preset and theft codes previously recorded to the radio.