C1248 GMC Code - Dynamic Rear Proportioning Control System
Quick Answer
Dynamic Rear Proportioning (DRP) is a control system that replaces the hydraulic proportioning function of the mechanical proportioning valve in the base brake system. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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
- C1248 GMC indicates Dynamic Rear Proportioning Control System.
- Common causes
- Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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.
Code C1248 GMC Description
The C1248 code will set when DTC C1214, C1217, C1237, C1254, C1255, C1261-1268, or C1271-1274 sets, DTC C1236 sets and system voltage is less than 8.5 volts, or two wheel speed sensor DTCs on same axle set.
What are the Possible Causes of the DTC C1248 GMC?
- Faulty Electronic Brake Control Module (EBCM)
- Electronic Brake Control Module (EBCM) harness is open or shorted
- Electronic Brake Control Module (EBCM) circuit poor electrical connection
How to Fix the DTC C1248 GMC?
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 C1248 GMC 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.
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Frequently Asked Questions about C1248 GMC Code
1. What does OBDII code C1248 GMC indicate regarding the Dynamic Rear Proportioning Control System?
The code C1248 indicates a fault in the Dynamic Rear Proportioning Control System in a GMC vehicle.
2. What are the common symptoms of OBDII code C1248 related to the Dynamic Rear Proportioning Control System?
Common symptoms include the illumination of the ABS warning light on the dashboard, potential loss of traction control functionality, and irregular braking behavior.
3. What are the possible causes of OBDII code C1248 in a GMC vehicle?
The code C1248 can be triggered by issues such as a faulty rear wheel speed sensor, malfunctioning ABS module, wiring problems, or a problem with the rear proportioning valve.
4. How can I diagnose the OBDII code C1248 related to the Dynamic Rear Proportioning Control System?
Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific trouble code, checking the rear wheel speed sensors, inspecting the wiring harness for damage, and testing the ABS module and proportioning valve.
5. Can driving with OBDII code C1248 present any safety risks?
Continuing to drive with this code may compromise the vehicle's braking and traction control systems, potentially leading to unsafe driving conditions. It is recommended to address the issue promptly.
6. Is it possible to repair OBDII code C1248 related to the Dynamic Rear Proportioning Control System at home?
Depending on your level of automotive expertise, you may be able to address simple causes such as a loose connection or damaged wiring. However, more complex issues may require professional diagnosis and repair.
7. How much does it typically cost to repair OBDII code C1248 in a GMC vehicle?
The cost of repairs for this code can vary significantly based on the underlying cause. Simple fixes like replacing a sensor or repairing wiring may be relatively affordable, while issues with the ABS module or proportioning valve can be more costly.
8. Can OBDII code C1248 be intermittent or persistent?
This code can manifest as intermittent, where the symptoms come and go, or persistent, where the warning lights and issues remain constant. Proper diagnosis is crucial to determine the root cause.
9. Is it safe to drive my GMC vehicle with the ABS warning light illuminated due to OBDII code C1248?
Driving with the ABS warning light on is not recommended, as it indicates a potential issue with the braking system. It is best to have the vehicle inspected and repaired as soon as possible.
10. How important is it to address OBDII code C1248 promptly?
Addressing this code promptly is crucial to ensure the proper functioning of the braking and traction control systems in your GMC vehicle. Ignoring the issue could compromise safety and lead to further damage.
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