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FLUID PRESSURE DIRECTED IN PREPARATION FOR A SHIFT Manual Valve Mechanically controlled by the gear selector lever, the manual valve is in the Park (P) position CBR1/C456 Pressure Control (PC) Solenoid 3 The CBR1/C456 pressure control solenoid (PCS) is energized (HIGH) allowing actuator feed CBR1/C456 Clutch Regulator Valve PCS CBR1/C456 CL fluid at the CBR1/C4-5-6 clutch regulator valve moves the valve against Shift Solenoid 1 Shift solenoid 1 is energized (ON) allowing actuator feed limit fluid to enter the solenoid 1 TCC Regulator Valve and Shuttle Valve Solenoid 1 fluid is routed to the TCC regulator valve and shuttle valve and moves the valve #2 Ball Check Valve Solenoid 1 fluid seats the #2 ball check valve against the reverse fluid passage and fluid is forced Clutch Select Valve 2 CSV2 enable fluid is routed to the clutch select valve 2 and moves the valve against clutch select
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
CBR1 fluid circuit and, through orifice #49 where it enters the CBR fluid circuit and an exhaust Shift Solenoid 2 Shift solenoid 2 is energized (ON) allowing actuator feed limit fluid to enter the solenoid 2 fluid 3-5 Reverse Clutch Regulator Valve Actuator feed limit fluid is routed through the valve and into the PS1 fluid passage. PS1 fluid is #3 Ball Check Valve Solenoid 2 fluid seats the #3 ball check valve against 456 CL fluid passage and fluid is forced Clutch Select Valve #3 CSV3 enable fluid moves the clutch select valve 3 against clutch select valve 3 spring force. CBR
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 205: Park - Engine Running REVERSE When the gear selector lever is moved to the Reverse (R) position (from the Park position) the FLUID PRESSURE DIRECTED IN PREPARATION FOR A SHIFT Manual Valve With the manual valve in the reverse position, line pressure is directed into the reverse fluid #2 Ball Check Valve Reverse fluid seats the #2 ball check valve against the solenoid 1 fluid passage and fluid is forced Clutch Select Valve 2
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
CSV2 enable fluid, present at the valve from Park position, continues to hold the clutch select LOW AND REVERSE CLUTCH APPLIES Clutch Select Valve 3 Reverse fluid from the manual valve is routed to clutch select valve 3 to combine with clutch Low and Reverse Clutch CBR and CBR1 fluid pressures are routed to both the inner and outer areas of the low and reverse #5 Ball Check Valve The 3-5 clutch reverse feed fluid seats #5 ball check valve against the drive 1-6 circuit allowing 3-5 REVERSE CLUTCH APPLIES C35R Pressure Control Solenoid 2 The C35R pressure control solenoid 2 is energized (HIGH) allowing actuator feed limit fluid to 3-5 Reverse Clutch Regulator Valve PCS 3-5 reverse clutch fluid moves the 3-5 reverse clutch regulator valve against 3-5 reverse
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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