Symptoms - Rear Axle Controls. 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 🢒 Driveline/Axle 🢒 Rear Axle Controls 🢒 Symptoms - Rear Axle Controls

Important: Review the system operation in order to familiarize yourself with the system functions. Refer to Two Speed Rear Axle Shift System Description and Operation .

•	Inspect for aftermarket devices which could affect the operation of the Rear Axle 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.

•	Inspect the rear axle for the proper fluid level.

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 Two Speed Rear Axle Inoperative in order to diagnose the symptom.