VPW - Variable Pulse Width Modulation

Vehicles Supported:

• Chevrolet
• Chevy
• GMC
• Oldsmobile
• Pontiac
• Cadillac
• Buick

Note: Most General Motors vehicles use VPW.

Note: The list above is not intended to be comprehensive. Be sure to verify the communication protocol used on the vehicle before attempting to analyze it. Your local dealer should have this information. You can also attempt to determine the protocol used on a vehicle by studying the pins found on the OBD-II connector. (See: Determining Protocol from Connector)