AutoCodesGMC – C0273 2017 GMC Sierra

C0273 2017 GMC Sierra Code - Brake Fluid Level Switch Circuit

Quick Answer

The brake fluid level switch monitors the level of the brake fluid in the brake fluid reservoir. Common causes include Faulty Brake Fluid Level Switch, Brake Fluid Level Switch harness is open or shorted, Brake Fluid Level Switch circuit poor electrical connection. 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
C0273 2017 GMC Sierra indicates Brake Fluid Level Switch Circuit.
Common causes
Common causes include Faulty Brake Fluid Level Switch, Brake Fluid Level Switch harness is open or shorted, Brake Fluid Level Switch circuit poor electrical connection.
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 Popularity 291
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 05, 2023
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Code C0273 2017 GMC Sierra Description

The brake fluid level switch monitors the level of the brake fluid in the brake fluid reservoir. When the Electronic Brake Control Module (EBCM) sees the brake fluid level switch input open, the Diagnostic Trouble Code (DTC) is set.
OBDII Code C0273 2017 GMC Sierra - Brake Fluid Level Switch Circuit - AutoCodes.com
C0273 2017 GMC Sierra Code - Brake Fluid Level Switch Circuit

What are the Possible Causes of the DTC C0273 2017 GMC Sierra?

  • Faulty Brake Fluid Level Switch
  • Brake Fluid Level Switch harness is open or shorted
  • Brake Fluid Level Switch circuit poor electrical connection
  • Faulty Electronic Brake Control Module (EBCM)

How to Fix the DTC C0273 2017 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0273 2017 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C0273 2017 GMC Sierra code?

Need more information on how to fix the C0273 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C0273 2017 GMC Sierra Code

1. What does the OBDII code C0273 mean on a 2017 GMC Sierra?

C0273 indicates an issue with the Brake Fluid Level Switch Circuit, which monitors the brake fluid level to ensure proper braking performance.

2. What are common symptoms of the C0273 code on a 2017 GMC Sierra?

Symptoms may include the brake warning light illuminating, ABS warning light activation, and potential loss of braking performance if fluid levels are low.

3. What causes the C0273 code to appear on a GMC Sierra?

Common causes include a faulty brake fluid level switch, low brake fluid levels, damaged wiring, or a malfunctioning ABS control module.

4. Can I drive my 2017 GMC Sierra with the C0273 code?

Driving may be unsafe if the brake fluid level is low or if braking performance is compromised. Address the issue promptly to avoid potential accidents.

5. How do I diagnose the C0273 code on my GMC Sierra?

Check the brake fluid level, inspect the brake fluid level switch for damage, and examine the wiring and connectors for corrosion or breaks.

6. How can I fix the C0273 code on a 2017 GMC Sierra?

Repairs may include refilling or flushing the brake fluid, replacing the brake fluid level switch, repairing damaged wiring, or resetting the ABS module.

7. What tools are needed to troubleshoot the C0273 code?

You’ll need an OBDII scanner, a multimeter to test electrical circuits, and basic hand tools for inspection and repairs.

8. How much does it cost to fix the C0273 code on a GMC Sierra?

Repair costs vary, but replacing a brake fluid level switch typically costs $50–$150 for parts and labor, depending on your location.

9. Can low brake fluid alone cause the C0273 code?

Yes, low brake fluid can trigger this code, as the brake fluid level switch detects insufficient fluid and sends a fault signal to the system.

10. Does the C0273 code affect the ABS system?

Yes, this code can impact the ABS system, potentially disabling its functionality if the brake fluid level or circuit is compromised.

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