C0299 2017 GMC Sierra Code - Brake Booster Large Vacuum Leak Detected
Quick Answer
The C0299 diagnostic trouble code (DTC) for the 2017 GMC Sierra indicates that a large vacuum leak has been detected in the brake booster system. Common causes include Damaged or deteriorated brake booster diaphragm, Loose or disconnected vacuum hoses, Faulty check valve in the vacuum line. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C0299 2017 GMC Sierra indicates Brake Booster Large Vacuum Leak Detected.
- Common causes
- Common causes include Damaged or deteriorated brake booster diaphragm, Loose or disconnected vacuum hoses, Faulty check valve in the vacuum line.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code C0299 2017 GMC Sierra Description
The C0299 diagnostic trouble code (DTC) for the 2017 GMC Sierra indicates that a large vacuum leak has been detected in the brake booster system. The brake booster is a crucial component of the vehicle's braking system, as it amplifies the force applied to the brake pedal, making it easier for the driver to stop the vehicle. A vacuum leak in the brake booster can lead to a loss of power assist, making it harder for the driver to apply the brakes effectively.
Common Causes of C0299 2017 GMC Sierra
- Damaged or deteriorated brake booster diaphragm
- Loose or disconnected vacuum hoses
- Faulty check valve in the vacuum line
- Malfunctioning brake booster sensor
- Vacuum pump failure
Symptoms of C0299 2017 GMC Sierra
- Stiff or hard brake pedal
- Increased pedal effort required to stop the vehicle
- Longer stopping distances
- Hissing or whistling noise when applying the brakes
- Illumination of the brake warning light on the dashboard
How to Fix C0299 2017 GMC Sierra
- Perform a visual inspection of the brake booster system to check for damaged components or loose connections.
- Use a vacuum gauge to test the integrity of the vacuum system and identify the source of the leak.
- Replace the damaged brake booster components, such as the diaphragm or check valve, as needed.
- Repair or replace any faulty vacuum hoses or connections.
- Clear the DTC from the vehicle's computer system and test drive the vehicle to ensure proper brake operation.
Cost to Fix C0299 2017 GMC Sierra
The cost of repairing a brake booster large vacuum leak on a 2017 GMC Sierra can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the parts for this repair can range from $100 to $300, while the labor costs can range from $150 to $400. Overall, the total repair cost may fall between $250 and $700. It's important to note that these estimates are general and can fluctuate based on factors such as location, shop rates, and the availability of parts. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost assessment.
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Frequently Asked Questions about C0299 2017 GMC Sierra Code
1. What does the OBDII code C0299 mean on a 2017 GMC Sierra?
C0299 indicates a "Brake Booster Large Vacuum Leak Detected," meaning the brake booster is not maintaining the required vacuum for proper operation.
2. What are the common symptoms of code C0299 in a 2017 GMC Sierra?
Symptoms may include a hard brake pedal, reduced braking performance, hissing sounds near the brake booster, or illumination of the ABS or brake warning light.
3. What causes the C0299 code on a 2017 GMC Sierra?
Common causes include a damaged or leaking brake booster diaphragm, disconnected or cracked vacuum hoses, or a faulty check valve in the vacuum line.
4. Can driving with code C0299 damage my 2017 GMC Sierra?
While the vehicle may still be drivable, reduced braking performance increases the risk of accidents. It is recommended to address the issue promptly.
5. How do I diagnose the C0299 code on my 2017 GMC Sierra?
Start by inspecting the brake booster, vacuum hoses, and check valve for leaks or damage. A smoke test may also help identify vacuum leaks.
6. What tools are needed to repair the C0299 code on a 2017 GMC Sierra?
Common tools include a vacuum gauge, brake booster tester, basic hand tools, and possibly a scan tool to clear the code after repairs.
7. Can a faulty check valve trigger the C0299 code?
Yes, a stuck or malfunctioning check valve can prevent proper vacuum flow to the brake booster, triggering the C0299 code.
8. How much does it cost to fix code C0299 on a 2017 GMC Sierra?
Costs vary depending on the issue, but brake booster replacement typically ranges from $300 to $700, while simpler repairs like replacing vacuum hoses are less expensive.
9. Can I fix code C0299 on my 2017 GMC Sierra myself?
If you have basic mechanical skills, you can inspect and replace hoses or the check valve. However, brake booster replacement may require professional assistance.
10. How do I prevent the C0299 code from recurring on my 2017 GMC Sierra?
Regularly inspect vacuum hoses for cracks, ensure the check valve is functioning properly, and address any brake system issues promptly.
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