2007 GMC Acadia Service Brake System Stabilitrak Car Won’t Start

Symptoms

The service brake system light is on.
The Stabilitrak light is on.
The car won’t start.

Causes

There are several possible causes for this problem:

A faulty brake light switch.
A faulty Stabilitrak sensor.
A problem with the wiring to the brake light switch or Stabilitrak sensor.
A problem with the brake system itself.

Diagnosis

To diagnose this problem, you will need to:

Check the brake light switch. The brake light switch is located under the brake pedal. To check the brake light switch, disconnect the electrical connector and see if the brake lights come on. If the brake lights come on, the brake light switch is faulty and needs to be replaced.
Check the Stabilitrak sensor. The Stabilitrak sensor is located on the rear axle. To check the Stabilitrak sensor, disconnect the electrical connector and see if the Stabilitrak light goes off. If the Stabilitrak light goes off, the Stabilitrak sensor is faulty and needs to be replaced.
Check the wiring to the brake light switch and Stabilitrak sensor. Check the wiring for any damage or loose connections. If you find any damage or loose connections, repair the wiring and reconnect the electrical connectors.
Check the brake system. If the brake light switch, Stabilitrak sensor, and wiring are all good, then the problem is likely with the brake system itself. You will need to have the brake system inspected by a qualified mechanic.

Repair

The repair for this problem will depend on the cause of the problem. If the brake light switch is faulty, you will need to replace the brake light switch. If the Stabilitrak sensor is faulty, you will need to replace the Stabilitrak sensor. If the wiring is damaged, you will need to repair the wiring. If the brake system itself is faulty, you will need to have the brake system repaired by a qualified mechanic.

Prevention

There are a few things you can do to prevent this problem from happening again:

Make sure to have your brake system inspected regularly by a qualified mechanic.
If you notice any problems with your brake system, such as a spongy brake pedal or a pulsation in the brake pedal, have the brake system inspected immediately.
Avoid driving in harsh conditions, such as in snow or ice. If you must drive in harsh conditions, make sure to drive slowly and carefully.