GM Service Manual Online
For 1990-2009 cars only

Range Reference (4L30-E)

 

Park

Reverse

Neutral

D

3

2

1

Gear

P

R

N

1st

2nd

3rd

4th

1st

2nd

3rd

1st

2nd

1st

1-2, 3-4 Solenoid N.C.

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

ON

OFF

ON

OFF

2-3 Solenoid N.O.

ON

ON

ON

ON

ON

OFF

OFF

ON

ON

OFF

ON

ON

ON

Overdrive Roller Clutch

--

H

--

H

H

H

O

H

H

H

H

H

H

Overrun Clutch

A

A

A

A

A

A

--

A

A

A

A

A

A

Fourth Clutch

--

--

--

--

--

--

A

--

--

--

--

--

--

Third Clutch

--

--

--

--

--

A

A

--

--

A

A

--

A

Reverse Clutch

--

A

--

--

--

--

--

--

--

--

--

--

--

Second Clutch

--

--

--

--

A

A

A

--

A

A

--

A

--

Principle Sprag Assembly

--

H

--

H

O

A*

A*

H

O

A*

H

O

H

Band Assembly

--

--

--

A

A

--

--

A

A

--

A

A

A

Engine Braking

No

No

No

No

Yes

Yes

Yes

No

Yes

Yes

Yes

Yes

Yes

ON = the solenoid valve is energized. OFF = the solenoid valve is de-energized. A = Applied H = Holding O = Overrun * = applied, or holding, with no load (not transmitting torque).