Service stabilitrac

Welcome to 2CarPros.

First, if the check engine light is on, you really should have the computer scanned. That would provide the diagnostic trouble codes which will help fix the problem. Here is a quick video showing how it's done:

https://youtu.be/YV3TRZwer8k

Now, I realize most people don't own a scanner, but most parts stores will do it for free. Have that done.

Next, the other things you indicated all tie together. My first guess is you have a bad wheel speed sensor. Basically, the wheel speed sensors control the ABS, stability control, and the other things you mentioned.

You may find there is a code stored indicating which one is the problem or if it is something different. If you want to test it yourself, here is a link that shows how it is done:

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

You will need to some basic testing equipment. Here are links showing what you will need:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

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Now, if you determine that one of the wheel speed sensors is bad, it could be front or the rear. Here are the directions for replacing a front sensor. The attached pictures correlate with these directions. If you find it's a rear sensor, the directions and pictures for replacement will follow these directions.

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FRONT WHEEL SPEED SENSOR REPLACEMENT
Front Wheel Speed Sensor Replacement

Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle See: Vehicle Lifting > Procedures > Lifting and Jacking the Vehicle.

2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation See: Wheels and Tires > Removal and Replacement > Tire and Wheel Removal and Installation.

pic 1

3. Remove the wheel speed sensor screw (2) from the steering knuckle.

4. Remove the wheel speed sensor (1).

pic 2

5. Remove the wiring harness retainers from the frame.

6. Disconnect the electrical connector.

7. Remove wheel speed sensor (1) from the vehicle.

Installation Procedure

pic 3

1. Install the wheel speed sensor (1) to the vehicle.

2. Connect the electrical connector.

3. Install the wiring harness retainers to the frame.

pic 4

4. Install the wheel speed sensor (1) to the steering knuckle.

Caution: Refer to Fastener Caution See: Vehicle > Technician Safety Information > Fastener Caution.

5. Install the wheel speed sensor screw (2) and tighten to 6 Nm (53 lb in).

6. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation See: Wheels and Tires > Removal and Replacement > Tire and Wheel Removal and Installation.

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Now, this vehicle can have either drum or disc type rear brakes. The first directions are for drum type.

Rear Wheel Speed Sensor (drum brakes)

REAR WHEEL SPEED SENSOR REPLACEMENT (DRUM BRAKE)
Rear Wheel Speed Sensor Replacement (Drum Brake)

Removal Procedure

1. Remove rear wheelhouse panel liner. Refer to Rear Wheelhouse Liner Replacement .

2. Remove the rear brake hose from the wheel cylinder and the rear backing plate. Refer to Rear Brake Hose Replacement (Disc Brake) See: Brake Hose/Line > Removal and Replacement > Rear Brake Hose Replacement (Disc Brake)Rear Brake Hose Replacement (Drum Brake) See: Brake Hose/Line > Removal and Replacement > Rear Brake Hose Replacement (Drum Brake)

pic 5
3. Remove the wheel speed sensor screw (2) from the steering knuckle.

4. Remove wheel speed sensor (1).

5. Remove wiring harness (3) from bracket (4).

pic 6

6. Disconnect the electrical connector (1).

7. Remove wheel speed sensor from vehicle.

Installation Procedure

pic 7

1. Install the wheel speed sensor to the vehicle.

2. Connect the electrical connector (1).

pic 8

3. Install the wheel speed sensor (1) to steering knuckle.

4. Install wiring harness (3) at the bracket (4).

Caution: Refer to Fastener Caution See: Vehicle > Technician Safety Information > Fastener Caution.

5. Install the wheel speed sensor screw (2) and tighten to 6 Nm (53 lb in).

6. Install the rear brake hose to the wheel cylinder and the rear backing plate. Refer to Rear Brake Hose Replacement (Disc Brake) See: Brake Hose/Line > Removal and Replacement > Rear Brake Hose Replacement (Disc Brake)Rear Brake Hose Replacement (Drum Brake) See: Brake Hose/Line > Removal and Replacement > Rear Brake Hose Replacement (Drum Brake)

7. Install rear wheelhouse panel liner. Refer to Rear Wheelhouse Liner Replacement .

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Rear disc type brakes

REAR WHEEL SPEED SENSOR REPLACEMENT (DISC BRAKE)
Rear Wheel Speed Sensor Replacement (Disc Brake)

Removal Procedure

1. Remove rear wheelhouse panel liner. Refer to Rear Wheelhouse Liner Replacement .

pic 9

2. Remove the wheel speed sensor screw (2) from the steering knuckle.

3. Remove the wheel speed sensor (1).

4. Remove the wiring harness (3) from the bracket (4).

pic 10

5. Remove the wiring harness (2) retainers (3) from the brake hose (4).

6. Remove the wiring harness (2) from the body retainer (1).

7. Replace the body retainer (1).

pic 11

8. Disconnect the electrical connector (1).

9. Remove wheel speed sensor from the vehicle.

Installation Procedure

pic 12

1. Install the wheel speed sensor to the vehicle.

2. Connect the electrical connector (1).

pic 13

3. Install the wiring harness (2) retainers (3) to the TOP SIDE of brake hose (4), using the marking points of old wiring harness.

4. Install the wiring harness (2) to the NEW body retainer (1).

pic 14

5. Install the wheel speed sensor (1) to the steering knuckle.

6. Install the wiring harness (3) at the bracket (4).

Caution:
Refer to Fastener Caution See: Vehicle > Technician Safety Information > Fastener Caution.

7. Install the wheel speed sensor screw (2) and tighten to 6 Nm (53 lb in).

pic 15

8. Check the correct installation position of the wiring harness (1). The wiring harness MUST be routed on top of the brake hose. If necessary adjust retainers (2) to the marking positions on the brake hose.

9. Apply tension to the wiring harness (1) between the retainers (2) for the correct routing.

10. Push down the brake hose by hand, to assure the correct installation position.

11. Install the rear wheelhouse panel liner. Refer to Rear Wheelhouse Liner Replacement .

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I hope this helps. Let me know if you need additional information or have other questions.

Take care,
Joe

Welcome back:

Okay, that isn't the cause of the lights you referred to. However, if it was scanned by a parts store, their scanners can't read the codes related to the brakes. The scanners used there are for powertrain codes (P) type codes. If that is how it was tested, there may be other things stored which are not seen.

What I suggest is to try the test I listed above to see if you can locate a bad sensor. Honestly, that is the easiest thing to do at this point.

Let me know.
Joe

Welcome back:

If no warning lights are on and it drives normally, you should be fine. I have a feeling either one of the wheel speed sensors is going bad or even got dirt on it causing the lights.

Honestly, without being there myself to drive it, I can't guarantee anything. However, I am a state certified mechanic and at this point feel it should be okay for you to drive. Just be aware there was an issue and alert. Don't wait until the last second to apply the brakes. The way the system is designed, if the ABS fails, the brakes still function, but they will function as brakes without ABS.

Please feel free to let me know if you have other questions or need help.

Take care,
Joe