GM Service Manual Online
For 1990-2009 cars only

RPO

VIN

Displacement

Camshaft Position (CMP) Actuator Control System

Active Fuel Management Control System

E85 Capable

Block Material

LY2

C

4.8L

No

No

No

Iron

LMF

4

5.3L

No

No

Yes

Iron

LY6

K

6.0L

Yes

No

No

Iron