Electronic Ignition - Service Manual Diagnosis Update

File In Section: 06 - Engine/Propulsion System

Bulletin No.: 02-06-04-047

Date: September, 2002

SERVICE MANUAL UPDATE

Subject:
Revised Electronic Ignition (EI) System Diagnosis

Models:
2002 Chevrolet TrailBlazer
2002 GMC Envoy
2002 Oldsmobile Bravada 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 (El) System Diagnosis has been changed to 2-20 Hertz".





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