G 20 3/4 Ton Van V8-379 6.2L DSL VIN C FI (1984)
Cruise Control Servo: Testing and Inspection
Fig. 13 Servo diagnostic chart (Part 1 of 2). Custom Cruise III
Cruise Control Servo: Testing and Inspection
Fig. 13 Servo diagnostic chart (Part 1 of 2). Custom Cruise III