Operation CHARM
: Car repair manuals for everyone.
Home
>>
GMC Truck
>>
2000
>>
C 2500 Truck 2WD V8-454 7.4L VIN J SFI
>>
Repair and Diagnosis
>>
Restraints and Safety Systems
>>
Air Bag Systems
>>
Testing and Inspection
>>
Scan Tool Testing and Procedures
>>
Scan Tool Data Definitions
>>
Lamp Driver
Lamp Driver
The scan tool displays Internal or External. The warning lamp control method for a hard wired lamp is Internal. The warning lamp control method for a serial data controlled lamp is External.