Control Modules
for your 2009 GMC Envoy
The control modules used in a GMC Envoy brake system function like the brain within the human body. It both gives and receives commands necessary for traction control and safe operations. This system relays messages from the sensors, hydraulic components, and the anti-lock controls to help prevent brake locking and skidding.
Without the control modules acting according to design, you may find your ability to safely stop jeopardized. A check engine or ABS light may come on as an early warning sign of malfunctioning parts, or you may experience traction failure issues. Resolve these concerns immediately to avoid damage to your GMC Envoy.