GM Service Manual Online
For 1990-2009 cars only

Vehicle

Engine Code

Engine Size

High Flow

Pressure Relief

LPM

GPM

kPa

PSI

Impala

LZ4/LZE

3.5L

9.1/10.6

2.4/2.8

9653/10342

1400/1500

LZ9

3.9L

9.1/10.6

2.4/2.8

9653/10342

1400/1500

LS4

5.3L

9.1/10.6

2.4/2.8

9846/10342

1428/1500