Chevrolet Silverado / GMC Sierra. Manual - part 873
Fig. 115: Identifying Electrical Connectors And Sensors
Courtesy of GENERAL MOTORS CORP.
14. Two wheel drive vehicles disconnect the turbine speed sensor (1), input speed sensor (2)
and output speed sensor (3).
15. Four wheel drive vehicles disconnect the electrical connectors to the turbine speed sensor
(1), the input speed sensor (2) and any electrical connectors on the transfer case.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 116: Transmission Rear Electrical Connector
Courtesy of GENERAL MOTORS CORP.
16. Disconnect the transmission main electrical connector. J 44257 may be used, but is not
required.
17. Remove the transmission heat shield. Refer to Transmission Heat Shield Replacement.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 117: Exhaust Pipe Hanger Bracket
Courtesy of GENERAL MOTORS CORP.
18. Remove the exhaust hanger bolts and reposition the hanger.
19. Support the transmission with a transmission jack.
20. Two wheel drive vehicles remove the propeller shaft. Refer to One-Piece Propeller Shaft
Replacement or Two-Piece Propeller Shaft Replacement .
21. Two wheel drive vehicles, remove the transmission support. Refer to Transmission
Support Crossmember Replacement (2WD 2500 HD/3500) or Transmission Support
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Crossmember Replacement (2WD 1500/2500) or Transmission Support
Crossmember Replacement (4WD 1500/2500) or Transmission Support
Crossmember Replacement (4WD 2500 HD/3500) .
22. Two wheel drive vehicles, remove the transmission mount from the transmission. Refer to
Transmission Mount Replacement.
23. Four wheel drive vehicles, remove the transfer case. Refer to the appropriate procedure:
If equipped with a NQG, refer to Transfer Case Assembly Replacement .
If equipped with a NQF, refer to Transfer Case Assembly Replacement .
24. Reposition any wiring harness branches out of the way.
Fig. 118: Securing Safety Chain Around Transmission
Courtesy of GENERAL MOTORS CORP.
25. Secure a safety chain around the transmission. Use care not to overlap any wiring, fuel lines,
or other related components.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado