GM Service Manual Online
For 1990-2009 cars only

Transmission in Reverse (R)

Engine Speed (RPM)

Approximate Line Pressure

Metric

English

Idle

500-610 kPa

73-89 psi

2600

1710-1980 kPa

248-287 psi

Transmission in Drive (D)

Engine Speed (RPM)

Approximate Line Pressure

Metric

English

Idle

330-390 kPa

48-57 psi

2600

1280-1418 kPa

186-206 psi