GM Service Manual Online
For 1990-2009 cars only

Vehicle

Engine Code

Engine Size

High Flow (Liters per Minute)

High Flow (Gallons per Minute)

Pressure Relief (kPa)

Pressure Relief (PSI)

TrailBlazer, Envoy, Bravada

LL8

4.2L

10.2/11.7

2.7/3.1

10342/11032

1500/1600

TrailBlazer Ext, Envoy Ext

LL8

4.2L

11.7/13.2

3.1/3.5

10342/11032

1500/1600

TrailBlazer Ext, Envoy Ext

LM4

5.3L

11.7/13.2

3.1/3.5

10342/11032

1500/1600