Chevrolet Silverado / GMC Sierra. Manual - part 879
Fig. 139: View Of Transmission Oil Cooler Lines At Transmission
Courtesy of GENERAL MOTORS CORP.
31. Remove the plugs from the transmission oil cooler line fittings in the transmission case, if
necessary.
32. Flush the transmission oil cooler and lines, if necessary. Refer to Transmission Fluid
Cooler Flushing and Flow Test.
33. Connect the transmission oil cooler lines (1, 2) to the transmission.
34. Lower the vehicle.
35. Install the cooling fan and shroud. Refer to Cooling Fan and Shroud Replacement (Non-
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
HP2) .
36. Connect both negative battery cables. 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) .
37. Fill the transmission with new transmission fluid.
38. Install the transmission fluid level indicator.
39. If a replacement transmission was installed, perform the "FastLearn" procedure using a scan
tool. Refer to FastLearn Procedure.
OFF-VEHICLE REPAIR INFORMATION
HOLDING FIXTURE INSTALLATION
Tools Required
J 44723 Transmission/Stand Adapter Plate. See Special Tools.
Installation
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 140: PTO Cover, Bolts & Gasket
Courtesy of GENERAL MOTORS CORP.
CAUTION: The torque converter must be held to the torque converter
housing by a retaining device such as shipping brackets.
Without the retaining device, the torque converter may
slide forward, disengaging the oil pump, or may fall
completely out of the transmission causing personal
injury and/or property damage.
CAUTION: The 1000 Series™ transmission dry weight is
approximately 150 kg (330 lb). To help avoid personal
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
1. Position the transmission on the work table so that the transmission is resting on the oil pan.
2. Remove 12 power take-off (PTO) cover bolts (3)
3. Remove 2 PTO covers (2).
4. Remove the PTO gaskets (1).
injury and/or property damage: Use caution when
installing, removing, or moving the transmission. Get
help when lifting the transmission. Assistance from a
hoist or another person may be required. Ensure that
lifting equipment can properly support the transmission.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado