Chevrolet Silverado / GMC Sierra. Manual - part 957
Fig. 392: TFP Switch And Reverse Signal Pipe
Courtesy of GENERAL MOTORS CORP.
3. Remove the TFP switch (1) from the main valve body (3).
4. Remove 2 bolts retaining the reverse signal pipe (2) to the main valve body (3).
5. Remove the reverse signal pipe (2) from the main valve body (3).
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 393: Modulated Main Pressure Solenoid Valve Body
Courtesy of GENERAL MOTORS CORP.
6. Remove 2 bolts (1) retaining the modulated main pressure solenoid valve body to the main
valve body (3).
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
7. Remove the modulated main pressure solenoid valve body (2) and six speed tube.
8. Remove the modulated main pressure (MAIN MOD) solenoid retainer (5) from the bottom
of the valve body.
9. Remove the MAIN MOD solenoid (3).
10. Remove 2 O-rings (4) from the MAIN MOD solenoid (3).
IMPORTANT: To help prevent confusing parts on assembly, use J 33163 to
store the removed control valve assembly valves, springs,
and stops. See Special Tools.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 394: TCC PCS And Components
Courtesy of GENERAL MOTORS CORP.
11. Remove 1 bolt (1) retaining the torque converter clutch pressure control solenoid (TCC
PCS) bracket to the main valve body.
12. Remove the TCC PCS bracket (2).
13. Remove the TCC PCS (7), valve (4), and spring (3).
14. Remove the O-rings (5, 6) from the TCC PCS (7).
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado