Operation CHARM
: Car repair manuals for everyone.
Home
>>
Chevy Truck
>>
2000
>>
C 2500 Truck 2WD V8-5.3L VIN T
>>
Repair and Diagnosis
>>
Powertrain Management
>>
Relays and Modules - Powertrain Management
>>
Relays and Modules - Computers and Control Systems
>>
Engine Control Module
>>
Description and Operation
>>
PCM Function
PCM Function
The
PCM
supplies a buffered voltage to various sensors and switches. The PCM controls most components with electronic switches which complete a ground circuit when turned ON.