Engine System Identification

Transmission Identification 4L80-E:

Engine VIN Code ID [1] K

Engine Displacement 5.7L (350 cid)

Engine Configuration V8

Fuel Control System Throttle Body Fuel Injection (TBI)

Ignition System High Energy Ignition W/Electronic Spark Timing & Electronic Spark Control (HEI-EST-ESC)

Computer System [2] Electronic Control Module (ECM)

Computer System [2] Powertrain Control Module (91PCM6)

Remarks:

[1] The eighth digit of the VIN denotes engine code.
[2] Transmission application determines computer system.
a. If truck has 4L80E transmission it has a PCM.
b. Look at pan shape and number of bolts for identification. 4L80E illustrated.