DTC Descriptor
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic procedure supports the following DTC:
DTC C0287 09 Longitudinal Accelerometer Circuit Rate of Change Above Threshold
DTC C0287 71 Longitudinal Accelerometer Circuit Invalid Serial Data Received
DTC C0287 75 Longitudinal Accelerometer Circuit Signal Above Allowable Range