Operation CHARM
: Car repair manuals for everyone.
Home
>>
GMC Truck
>>
1993
>>
G 3500 1 Ton Van V8-454 7.4L
>>
Repair and Diagnosis
>>
Powertrain Management
>>
Fuel Delivery and Air Induction
>>
Relays and Modules - Fuel Delivery and Air Induction
>>
Idle/Throttle Speed Control Unit
>>
Adjustments
Idle/Throttle Speed Control Unit: Adjustments
Base Idle Speed is not adjustable on this engine and is controlled by the control module.
Refer to FUEL SUPPLY AND AIR INDUCTION/ADJUSTMENT PROCEDURES for adjusting Controlled Idle Speed.