Fig. 210: Drive Range, Second Gear
Courtesy of GENERAL MOTORS CORP.
DRIVE RANGE, THIRD GEAR
As the vehicle speed increases, the transmission control module (TCM) receives input signals
from the automatic transmission input and output speed sensors, the throttle position sensor and
other vehicle sensors to determine the precise moment to command OFF the normally-low CB26
pressure control solenoid 4. At the same time the C35R pressure control solenoid 2 is also
commanded ON to regulate 3-5 clutch apply.
3-5 REVERSE CLUTCH APPLIES
C35R Pressure Control Solenoid 2
The C35R pressure control solenoid 2 is commanded ON allowing actuator feed fluid to enter the
pressure control solenoid (PCS) 35 reverse clutch fluid circuit. PCS 35 reverse clutch fluid is
routed through orifice #48 and then to the 3-5 reverse clutch regulator valve. PCS 35 reverse
clutch fluid is also routed through orifice #40 and then to the 3-5 reverse clutch boost valve.
3-5 Reverse Clutch Boost Valve
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado