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Chevrolet Silverado / GMC Sierra. Manual - part 1704
Starting System Description and Operation
Circuit/System Verification
Start the engine. Listen to the starter noise while the engine is cranking. Compare the concern to a
similar vehicle.
Circuit/System Testing
1. Remove the flywheel inspection cover.
2. Inspect the flywheel for the following:
Loose flywheel bolts
Chipped gear teeth
Missing gear teeth
Bent flywheel
Debris in the bell housing
If not within specifications, remove the debris, tighten the flywheel bolts, or repair or
replace the flywheel.
3. If all inspections were within specification, replace the starter motor.
Repair Procedures
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Fastener Tightening Specifications for the 4.3L (LU3) engine
Fastener Tightening Specifications for the 6.6L (LMM) engine
Fastener Tightening Specifications for all other engines (w/o LU3 or LMM)
Engine Flywheel Replacement for the 4.3L (LU3) engine
Engine Flywheel Replacement for the 6.6L (LMM) engine
Automatic Transmission Flex Plate Replacement for all other engines (w/o LU3 or
LMM)
Starter Motor Replacement (4.3L) or Starter Motor Replacement (4.8L, 5.3L, 6.0L,
and 6.2L) or Starter Motor Replacement (6.6L)
REPAIR INSTRUCTIONS
BATTERY NEGATIVE CABLE DISCONNECTION AND CONNECTION (W/SINGLE BATTE
BATTERY)
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Disconnect Procedure
Fig. 5: View Of Battery Cable Components
Courtesy of GENERAL MOTORS CORP.
1. Turn off all the lamps and accessories.
2. Turn the ignition OFF.
CAUTION: Refer to Battery Disconnect Caution .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
3. Open the hood.
4. Loosen the negative cable nut (6).
5. Remove the negative battery cable from the battery terminal.
6. Reposition the negative battery cable away from the battery.
Connect Procedure
CAUTION: Refer to Battery Disconnect Caution .
IMPORTANT: Clean any existing corrosion from the battery terminal and the
battery cable end.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 6: View Of Battery Cable Components
Courtesy of GENERAL MOTORS CORP.
1. Position the negative battery cable to the battery.
2. Install the negative battery cable onto the battery terminal.
3. Tighten the negative cable nut (6).
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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