Symptoms - Cruise Control. GMC Truck GMC C-Series Medium Duty Truck B7 2001

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C-Series Medium Duty Truck B7 🢒 Body and Accessories 🢒 Cruise Control 🢒 Symptoms - Cruise Control

Important: Perform the Diagnostic System Check - Cruise Control before using the Symptom Tables in order to verify that all of the following are true:

•	There are no DTCs set.

•	The control module(s) can communicate via the serial data link.

Review the system operation in order to familiarize yourself with the system functions. Refer to Cruise Control Description and Operation .

•	Inspect for upfitter or aftermarket devices which could affect the operation of the Cruise Control System. Refer to Checking Aftermarket Accessories in Wiring Systems.

•	Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Refer to one of the following symptom diagnostic procedures in order to diagnose the symptom:

•	For all caterpillar engines refer to Caterpillar Diagnostic Information.

•	Cruise Control Inoperative/Malfunctioning 8.1L.