Engine System Identification

Diesel Engine I.D.:

LIGHT DUTY

Engine VIN Code [1] C
Engine RPO Code LH6
Engine Displacement 6.2L (379 cid)
Engine Configuration V8
Fuel System Diesel Fuel Injection
Computer System:
[2a] Powertrain Control Module (PCM)
[2b] Engine Control Module (ECM/GMCM)

Remarks:

[1] The eighth digit of the VIN denotes engine code.
[2] Transmission application determines computer system:
a. If vehicle is equipped with a 4L60-E automatic transmission it has a 93PCM6 computer.
b. If vehicle is equipped with manual transmission it has a (ECM/GMCM) computer.


HEAVY DUTY

Engine VIN Code [1] J
Engine RPO Code LL4
Engine Displacement 6.2L (379 cid)
Engine Configuration V8
Fuel System Diesel Fuel Injection
Computer System [2] Transmission Control Module (TCM)

Remarks:

[1] The eighth digit of the VIN denotes engine code.
[2] Transmission application determines computer system:
Vehicle equipped with a 4L80-E automatic transmission has a 91PCM6 computer.