K 2500 Truck 4WD V8-393 6.5L DSL Turbo (1992)
Shift Solenoid: Description and Operation
Shift Solenoid "A"
Shift Solenoid "A" Circuit
Purpose:
The Shift solenoid, when activated redirects fluid to act upon the shift valves.
Operation:
The PCM/TCM activates the solenoid by grounding it through an internal quad driver. Solenoid "A" is ON in 1st and 4th gear, but OFF in 2nd and
3rd gears. The shift solenoid "A" is usually blue in color.
Location:
Shift solenoid "A" is attached to the valve body.
