SMU - Revised Electronic Ignition System Diagnosis. Chevrolet Express 2001

Subject:

Revised Electronic Ignition System Diagnosis

Models:

2001 Chevrolet and GMC G-Van Models

with 8.1L Engine (VIN G -- RPO L18)

This bulletin is being issued to revise Step 28 of the Electronic Ignition System Diagnosis in the Engine Controls-8.1L 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 SI2000. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.

Step	Action	Value(s)	Yes	No
28	Test for a short to ground in the CKP 12-volt reference circuit and in the CMP sensor 12-volt reference circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	--	Go to Step 34	Go to Step 32

Step

Action

Value(s)

Yes

Test for a short to ground in the CKP 12-volt reference circuit and in the CMP sensor 12-volt reference circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 34

Go to Step 32