DTC Descriptors
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.
- DTC P1640
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Control Module Output A Circuit
- DTC P1650
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Control Module Output B Circuit
- DTC P1660
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Control Module Output C Circuit