October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Powertrain Control Module Inhibit

Powertrain Control Module (PCM) will inhibit cruise control if one or more of following has occurred:

When park, reverse, neutral, or first gear is indicated.
When certain Diagnostic Trouble Codes (DTC) are stored. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
When an over/undercharged battery condition exists.
With low engine RPM.
With high engine RPM e.g. fuel cut off.