Chevrolet Silverado / GMC Sierra. Service manual — part 1726

Fig. 82: View Of Under Hood Junction Block Cover
Courtesy of GENERAL MOTORS CORP.

11. Install the under hood junction block cover.

12. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and

Connection (w/Single Battery) or Battery Negative Cable Disconnection and
Connection (w/Auxiliary Battery) or Battery Negative Cable Disconnection and
Connection (w/Dual Batteries).

BATTERY POSITIVE CABLE REPLACEMENT (6.6L)

Removal Procedure

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 83: View Of Under Hood Junction Block Cover
Courtesy of GENERAL MOTORS CORP.

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection

and Connection (w/Single Battery) or Battery Negative Cable Disconnection and
Connection (w/Auxiliary Battery) or Battery Negative Cable Disconnection and
Connection (w/Dual Batteries).

2. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .

3. Remove the underhood junction block cover.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 84: View Of Junction Block & Retainers
Courtesy of GENERAL MOTORS CORP.

4. Lift the junction block retainers from the locked position (3) and rotate the retainers to the

open position (1).

5. Reposition the junction block.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 85: View Of Positive Battery Cable Connector & (UBEC)
Courtesy of GENERAL MOTORS CORP.

6. Remove the positive battery cable connector (1) from the underhood bussed electrical

center (UBEC).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado