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Fig. 162: Identifying Main valve Body Solenoids, Switches & Harness 2. Disconnect the internal wiring harness (2) from the following components: Pressure control solenoid 1 (PCS1) (7)
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
PCS2 (6) Shift solenoid 3 (SS3) (5) SS2 (4) Torque converter clutch (TCC) PCS (3) SS1 (8). Transmission fluid pressure (TFP) switch (9) Modulated main pressure solenoid (11) Transmission internal mode switch (IMS) 3. Remove the solenoid retainers (1) from SS2 (4) and SS3 (5). 4. Remove the internal wiring harness (2) from main valve body (10). 5. Install the solenoid retainers (1). CONTROL VALVE ASSEMBLY REMOVAL
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 163: Manual Shift Shaft Detent Spring 1. Remove 2 detent spring bolts (1). 2. Remove the manual shift shaft detent spring (2).
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 164: Control Valve Assembly Bolts 3. Remove 11 control valve body assembly bolts (1). 4. Remove 4 bolts (2) from the modulated main valve body and control valve body. IMPORTANT: Six gold colored bolts retain the modulated main valve body. Four of these bolts assist in retaining the control valve body.
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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