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SMU - Revised Excessive Wheel Speed Variation DTC Tables (C1225, C1226, C1227, C1228)

Subject:Revised Excessive Wheel Speed Variation DTC Tables (C1225, C1226, C1227, C1228)

Models:1998-1999 Chevrolet Venture
1998-1999 Oldsmobile Silhouette
1998 Pontiac Trans Sport
1999 Pontiac Montana



This bulletin is being issued to revise Steps 13 and 15 of the Excessive Wheel Speed Variation diagnostic tables (C1225, C1226, C1227, C1228) in the Antilock Brake System subsection of the Service Manual. Please replace the current information in the Service Manual with the following information.

The following information has been updated in SI2000. If you are using a paper version of this Service Manual, please make a reference this bulletin on the affected page.

In Step 13, the Yes column should read "Go to Step 15." The No column should read "Go to Step 14."

In Step 15, the Yes column should read "Go to Step 17." The No column should read "Go to Step 16."