GM Service Manual Online
For 1990-2009 cars only

Range Reference Chart

Range

Park

Reverse

Neutral

OD

D

2

1

Gear

   

1st

2nd

3rd

4th

1st

2nd

3rd

1st

2nd

1st

1-2 Shift Solenoid

ON

ON

ON

ON

OFF

OFF

ON

@ ON

@ OFF

@ OFF

@ ON

@ OFF

@ON

2-3 Shift Solenoid

ON

ON

ON

ON

ON

OFF

OFF

@ ON

@ ON

@ OFF

@ ON

@ ON

@ON

4th Clutch

--

--

--

--

--

--

A

--

--

--

--

--

Reverse Band

--

A

--

--

--

--

--

--

--

--

--

--

2nd Clutch

--

--

--

--

A

A

A

--

A

A

--

A

--

3rd Clutch

--

--

--

--

--

A

*

--

--

A

--

--

A

3rd Sprag Clutch

--

--

--

--

--

H

O

--

--

H

--

--

H

Input Clutch

*

A

*

A

*

--

--

A

*

A

A

*

A

Input Sprag Clutch

*

H

*

H

O

--

--

H

O

H

H

O

H

2/1 Band

--

--

--

--

--

--

--

--

--

--

A

A

A

1/2 Support Roller Clutch

--

--

--

H

H

O

O

H

H

O

H

H

H

Forward Band

--

--

--

A

A

A

A

A

A

A

A

A

A

  • A = Applied
  • H = Holding
  • O = Overrun
  • * Applied but not effective
  • @ The solenoid's state follows a shift pattern which depends upon vehicle speed, throttle position, and selected gear range.
  • ON = The solenoid is energized.
  • OFF = The solenoid is de-energized