Engine System Identification

Transmission Identification 4L80-E:

Engine VIN Code ID [1] Z

Engine Displacement 4.3L (262 cid)

Engine Configuration V6

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 Electronic Control Module (ECM)

Computer System Powertrain Control Module (PCM)

Remarks:

[1] The eighth digit of the VIN denotes engine code.