GM Service Manual Online
For 1990-2009 cars only

Transmission Fluid Pressure Manual Valve Position Switch Logic V6

Gear Selector Position

Signal A

Signal B

Signal C

Park/Neutral

Open 12 V

Closed 0 V

Open 12 V

Reverse

Closed 0 V

Closed 0 V

Open 12 V

Drive 4

Open 12 V

Closed 0 V

Closed 0 V

Drive 3

Open 12 V

Open 12 V

Closed 0 V

Drive 2

Open 12 V

Open 12 V

Open 12 V

Drive 1

Closed 0 V

Open 12 V

Open 12 V

Invalid

Closed 0 V

Open 12 V

Closed 0 V

Closed 0 V

Closed 0 V

Closed 0 V