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Fig. 98: Placing 30 mm 12-Point Deep Socket Or Box-End Over Connector 3. Place a 30 mm or 1 3/16 inch 12-point deep socket or box-end wrench (2) over the main transmission connector (1). 4. Push inward on the socket or wrench to release the retaining feet that attach the connector (1) to the transmission case. 5. Remove the wrench. Push inward on the electrical connector to separate from the transmission case. IMPORTANT: The main transmission connector is actually one end of the internal wiring harness that protrudes through the
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 99: Identifying Internal Wiring Harness Connectors 6. Disconnect the internal wiring harness connectors (1) from the solenoids, the internal mode switch (IMS), and from the transmission fluid pressure (TFP) switch. 7. Remove the solenoid retainers (2) for SS3 and SS2. 8. Remove the internal wiring harness from the transmission. IMPORTANT: The solenoid retainers for shift solenoid 3 (SS3) and shift solenoid 2 (SS2) also retain tabs on the wiring harness U-
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Installation Procedure Fig. 100: Identifying Internal Wiring Harness Connectors 1. Align the tabs on the new wiring harness (10) U-channel with the solenoid retainer slots for SS3 (3) and SS2 (2) on the control valve assembly. Install the solenoid retainers (12) for the
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
2. Attach the internal wiring harness (10) connectors to the solenoids, the IMS, and the TFP switch. Connector (8) goes to SS1 (5) Connector (9) goes to the TFP switch (7) Connector (11) goes to the MAIN MOD solenoid (19) Connector (13) goes to the IMS Connector (14) goes to the TCC PCS (1) Connector (15) goes to SS2 (2) Connector (16) goes to SS3 (3) Connector (17) goes to PCS1 (4) Connector (18) goes to PCS2 (6) IMPORTANT: The internal wiring harness connectors should be in the correct position for installation because of their pre-
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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