Friday, November 15, 2013
How to Install a Brake Controller in a Suburban
The GMC Suburban was a large sport utility vehicle that General Motors rebranded as the GMC Yukon XL in 1999. It has an anti-lock braking system with a controller that reduces the braking force to a wheel that rotates more slowly than the other wheels. This keeps the wheels from locking under emergency conditions. You may need to install a new brake controller if the Anti-lock Braking System (ABS) warning light comes on. The brake controller in a GMC Suburban is in the engine compartment, on the left side of the engine.
Instructions
- 1
Label the electrical connectors on the brake controller, then detach them from the brake controller. Label the brake lines on the brake controller, then disconnect the brake line fittings with a socket wrench. Detach the brake lines from the brake controller.
2Disconnect the mounting bolts for the brake controller bracket with a socket wrench. Remove the brake controller and its bracket from the vehicle as an assembly. Disconnect the mounting bolts for the brake controller, and detach the brake controller from its bracket.
3Attach the new brake controller to its bracket, and tighten the mounting bolts to 5 foot-pounds with a torque wrench. Install the brake controller assembly to the vehicle, and tighten the mounting bolts to 33 foot-pounds with a torque wrench.
4Install the brake controller assembly to the vehicle, and tighten the mounting bolts to 33 foot-pounds with a torque wrench.
5Attach the brake lines to the brake controller, using the labels from step one as a guide. Tighten the brake line fittings to 16 foot-pounds with a torque wrench. Connect the electrical connectors to the brake controller, using the labels from step one as a guide.
6Bleed the brake controller valve to remove the air from the brake system. Bleed the entire braking system.
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