C 3500 Truck 2WD V8-379 6.2L DSL (1988)
Transmission Vacuum Regulator Valve: Service and Repair
THM 400/475 Transmission
1. Remove modulator attaching screw and retainer.
2. Remove modulator assembly from case and discard O-ring seal.
3. Remove modulator valve from case.
4. Reverse procedure to install, using a new O-ring seal.