Chevrolet Silverado / GMC Sierra. Service manual — part 1757

AUXILIARY BATTERY RELAY REPLACEMENT (6.2L)

Removal Procedure

Remove the auxiliary battery if equipped. Refer to Auxiliary Battery Replacement (6.2L,
and 6.6L).

1

Auxiliary Battery Tray Bolts (Qty: 6)

Tip: Note the length of bolts when removing for proper reinstallation. The
auxiliary battery tray bolts vary in length.

Tighten: 9 N.m (80 lb in)

NOTE:

Refer to Fastener Notice .

2

Auxiliary Battery Tray

CAUTION: Refer to BATTERY DISCONNECT CAUTION

2008 Chevrolet Silverado 1500

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

Fig. 203: View Of Battery & Battery Cable Fasteners
Courtesy of GENERAL MOTORS CORP.

1. Disconnect the auxiliary battery negative 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. Reposition the auxiliary battery positive cable boot (5) from the auxiliary battery relay stud.

3. Remove the auxiliary battery positive cable nut (6) from the battery relay stud.

4. Remove the auxiliary battery positive cable from the auxiliary battery relay.

2008 Chevrolet Silverado 1500

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

Fig. 204: View Of Battery Cable Nuts, Retainers & Bolts
Courtesy of GENERAL MOTORS CORP.

5. Disconnect the auxiliary battery positive cable electrical connector (1) from the battery

relay.

6. Reposition the auxiliary battery positive cable boot (5) from the auxiliary battery relay stud.

7. Remove the auxiliary battery positive cable nut (4) from the battery relay stud.

8. Remove the auxiliary battery positive cable from the auxiliary battery relay.

2008 Chevrolet Silverado 1500

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

Fig. 205: View Of Auxiliary Battery Relay & Nuts
Courtesy of GENERAL MOTORS CORP.

9. Remove the auxiliary battery relay nuts and relay.

Installation Procedure

2008 Chevrolet Silverado 1500

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