GM Service Manual Online
For 1990-2009 cars only

Gear

Park

Reverse

Neutral

D

P

EVT R

N

EVT Low

1st

2nd

3rd

4th

EVT High

Shift Solenoid 1

OFF

OFF

OFF

OFF

ON

ON

ON

ON

OFF

Shift Solenoid 2

OFF

OFF

OFF

OFF

OFF

OFF

ON

ON

ON

Line PC Solenoid 1 N.H.

ON

ON/OFF*

ON

ON/OFF*

ON

ON

ON

ON

ON

PC Solenoid 2 Trim N.H.

OFF

OFF

OFF

OFF

OFF

ON

ON

ON

ON

PC Solenoid 3 Trim N.H.

OFF

ON

OFF

ON

ON

ON

OFF

ON

OFF

PC Solenoid 4 Trim N.L.

OFF

OFF

OFF

OFF

ON

OFF

ON

OFF

OFF

PC Solenoid 5 N.L.

OFF

ON/OFF*

OFF

ON/OFF*

OFF

OFF

OFF

OFF

OFF

1-3 Clutch

--

--

--

--

A

--

A

--

--

4th Clutch

--

--

--

--

--

--

--

A

--

Hybrid Low 1-2 Clutch

--

A

--

A

A

A

--

--

--

Hybrid Direct 2-3-4 Clutch

--

--

--

--

--

A

A

A

A

ON = the solenoid valve is energized.

OFF = the solenoid valve is de-energized.

A = Applied

*When the internal combustion engine is running, the line pressure control solenoid is ON (pressurized) and the pressure control solenoid 5 is OFF (no pressure). When the internal combustion engine is OFF (auto stop), the line pressure control solenoid is OFF (no pressure) and the pressure control solenoid 5 is ON (pressurized).