Chevrolet Silverado / GMC Sierra. Manual - part 859
Fig. 67: Identifying Speed Sensors
Courtesy of GENERAL MOTORS CORP.
1. Be sure the vehicle ignition is turned off.
2. Disconnect the external wiring harness from the speed sensor.
3. Remove the bolt (1) from the speed sensor and carefully remove the speed sensor (2).
Installation Procedure
CAUTION: Refer to BATTERY DISCONNECT CAUTION .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 68: Identifying Speed Sensors
Courtesy of GENERAL MOTORS CORP.
1. Install a new a O-ring on the speed sensor (2). Lubricate the O-ring with clean transmission
fluid.
2. Install the new speed sensor (2) into the speed sensor bore. Align the hole in the retaining
bracket with the bolt hole in the speed sensor boss.
IMPORTANT: Do not rotate the sensor in its retaining bracket. Changing
the sensor/bracket orientation may cause improper
operation.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
3. Install the speed sensor bolt (1).
Tighten: Tighten bolt to 12 N.m (108 lb in).
4. Reconnect the external wiring harness to the speed sensor.
TRANSMISSION FLUID COOLER HOSE/PIPE REPLACEMENT
Removal Procedure
1. Remove the radiator grille. Refer to Radiator Grille Replacement (Chevrolet) or
Radiator Grille Replacement (GMC) .
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 69: View Of Transmission Cooler Hoses
Courtesy of GENERAL MOTORS CORP.
2. Remove the transmission fluid cooler hose from the auxiliary oil cooler. Refer to
Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and
Connection .
3. Remove the transmission fluid cooler hose from the radiator. Refer to Transmission Fluid
Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection .
4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado