Product Description
This module will output the Alternator Request signal to the GM ECU. This signal was opriginally sent from the GM BCM and would tell the ECU what voltage to command the alternator to. Without a BCM your ECU will output a default voltage message thats normally around 13.2 volts. Once you install our module your ECU will command the alternator to around 14 volts.
This module installs quick and easy with a 4 wire hookup
power, Ground, CAN+, CAN-
This unit has been verified to work with a E38 ECU E92 and E67
INSTRUCTIONS E38