| Subject: | 4.2L Goodwrench® Engine Service |
| Models: | 2002 Chevrolet TrailBlazer |
| with 4.2L Engine (VIN S -- RPO LL8) |
The 2002 4.2L LL8 Goodwrench® engine will be replaced by the 2003
4.2L LL8 Goodwrench® engine. This will occur when the current supply
of 2002 LL8 engines is exhausted.
When using a 2003 LL8 Goodwrench® engine in a 2002 vehicle, the
following parts MUST be transferred from the old engine to the new replacement
engine assembly.
The knock sensor and the spark plugs must be transferred to insure that
the vehicle has no change in emissions. The oil pan must be changed because
the 2002 has a provision for oil level sensing and the 2003 does
not. Failure to transfer the oil pan could result in having to remove the
engine assembly from the vehicle a second time.
