Mike's Workshop Manuals
: Service manuals for every vehicle
Home
>>
GMC
>>
1989
>>
Magnavan 7.4 N, 400/M40
>>
Repair and Diagnosis
>>
Accessories & Equipment
>>
Cruise Control Systems
Cruise Control Systems
Expand All (for easy ctrl-f)
Collapse All
Description
Operation
Notes
Multi-Function Control Switch
Set/Coast Switch
Notes
"SET" Mode
"COAST" Mode
"TAP DOWN" Mode
Electronic Controller Module
Servo Unit
Speed Sensor
Vacuum Release Valves & Valve/Switches
Adjustments
Brake/Release Switch Adjustment
Clutch/Release Switch Adjustment
Trouble Shooting
Inoperative Electrical System
Inoperative Mechanical System
Vehicle Surges
Electrical
Mechanical
Cruise Set Speed High Or Low
No Resume Function
Unwanted Cruise Or Acceleration
Testing & Diagnosis
Preliminary Inspection
Cruise Control Diagnosis
Servo Resistance Test
Servo Vacuum Test
Multi-Function Control Switch Test
Controller Module Voltage Check
Controller Module Resistance Check
Wiring Diagrams