Diagnostic Aids

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Ask the customer about possible overloading, exceeding the trailer towing limit or towing in overdrive.
Ensure that the current PCM calibration is correct for the final drive ratio.