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Gary, Buick Technician
Category: Buick
Satisfied Customers: 16738
Experience:  15 years master GM tech and mater ASE tech
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Gary, there was no change with the new controller. Does this

Customer Question

Gary, there was no change with the new controller. Does this unit have to be programmed or is there something else that changes the green/white wire to 5v reference?
Submitted: 2 years ago.
Category: Buick
Expert:  Gary replied 2 years ago.
yes the module needs to programmed for it to work correctly with a programming scan tool and software the green/white wire is not a 5 volts wirethat is a return wire that when the car is moving the reluctor wheel triggers the sensor and it sends back an AC signal to the TCM so it knows how fast the car is going