GM Service Manual Online
For 1990-2009 cars only

Gear Range

Solenoid

Line Pressure

B Port

E Port

Park/Neutral

ON

LOW

90-124.7 psi (620-859 kPa) (6.2-8.6 bar)

--

OFF

HIGH

221.9-252.3 psi (1529-1739 kPa) (15.3-17.4 bar)

--

Reverse

ON

LOW

89.9-124.7 psi (619-859 kPa) (6.2-8.6 bar)

--

OFF

HIGH

221.9-252.3 psi (1529-1739 kPa) (15.3-17.4 bar)

--

Drive

ON

LOW

--

90-124.7 psi (620-859 kPa) (6.2-8.6 bar)

OFF

HIGH

--

137.7-162.4 psi (949-1116 kPa) (9.5-11.2 bar)

3

ON

LOW

90-124.7 psi (620-859 kPa) (6.2-8.6 bar)

90-124.7 psi (620-859 kPa) (6.2-8.6 bar)

OFF

HIGH

221.9-252.3 psi (1529-1739 kPa) (15.3-17.4 bar)

137.7-162.4 psi (949-1116 kPa) (9.5-11.2 bar)

2

ON

LOW

--

90-124.7 psi (620-859 kPa) (6.2-8.6 bar)

OFF

HIGH

--

137.7-162.4 psi (949-1116 kPa) (9.5-11.2 bar)

1

ON

LOW

90-124.7 psi (620-859 kPa) (6.2-8.6 bar)

--

OFF

HIGH

221.9-252.3 psi (1529-1739 kPa) (15.3-17.4 bar)

--