| Subject: | Revised Electronic Ignition (EI) System Diagnosis |
| Models: | 2002 Chevrolet TrailBlazer |
| with 4.2L Engine (VIN S - RPO LL8) |
This bulletin is being issued to revise the Electronic Ignition (EI)
System Diagnosis in the Engine Controls - 4.2L sub-section of the Service
Manual. Please replace the current information in the Service Manual with
the following information.
The following information has been updated within SI. If you are using
a paper version of this Service Manual, please make a reference to this bulletin
on the affected page.
The value in Step 8 of the Electronic Ignition (EI) System Diagnosis
has been changed to "2-20 Hertz".
