Chevrolet Silverado / GMC Sierra. Service manual — part 1820
Fig. 107: View Of Oil Pan Skid Plate & Bolts
Courtesy of GENERAL MOTORS CORP.
23. Install the transmission crossmember. Refer to Transmission Support Crossmember
Replacement (2WD 2500 HD/3500) or Transmission Support Crossmember
Replacement (2WD 1500/2500) or Transmission Support Crossmember Replacement
(4WD 1500/2500) or Transmission Support Crossmember Replacement (4WD 2500
HD/3500) .
24. Position the oil pan skid plate and install the oil pan skid plate bolts, if equipped.
Tighten: Tighten the bolts to 28 N.m (21 lb ft).
25. Lower the vehicle.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
CATALYTIC CONVERTER REPLACEMENT (4.8L, 5.3L, 6.0L, 6.2L)
Removal Procedure
Fig. 108: View Of Oil Pan Skid Plate & Bolts
Courtesy of GENERAL MOTORS CORP.
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the oil pan skid plate bolts and skid plate, if equipped.
3. Remove the transmission crossmember. Refer to Transmission Support Crossmember
Replacement (2WD 2500 HD/3500) or Transmission Support Crossmember
Replacement (2WD 1500/2500) or Transmission Support Crossmember Replacement
(4WD 1500/2500) or Transmission Support Crossmember Replacement (4WD 2500
HD/3500) .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 109: View Of Engine Wiring Harness Electrical Connectors, (CPA) Retainers &
Engine Harness Clips
Courtesy of GENERAL MOTORS CORP.
4. Remove the right front connector position assurance (CPA) retainer (2).
5. Disconnect the right front heated oxygen sensor (HO2S) electrical connector from the
engine wiring harness electrical connector (1).
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
6. Remove the right rear CPA retainer (4).
7. Disconnect the engine wiring harness electrical connector (3) from the right rear HO2S
electrical connector.
8. Remove the right rear HO2S electrical connector clip from the engine harness clip (5).
Fig. 110: View Of Left Rear CPA Retainer & Engine Wiring Harness Electrical
Connector
Courtesy of GENERAL MOTORS CORP.
9. Remove the left rear CPA retainer (1).
10. Disconnect the left rear HO2S electrical connector from the engine wiring harness electrical
connector (3).
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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