TSB Document:

• Sorry, the NHTSA has not posted this TSB document yet.

You can still get the detailed info from Buick for this TSB. Call your local Buick dealer's service department & ask for a copy of TSB# 040604023.

Affected Component: ENGINE AND ENGINE COOLING

Summary

POWERTRAIN CONTROL MODULE WILL NOT PROPERLY COMMUNICATE ON BOARD DIAGNOSTIC EGR TEST RESULT INFORMATION TO NON-TECH2 SERVICE OR TEST EQUIPMENT. *EH

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