U18B7 GMC Code - Lost Communication With Active Safety Control Module 2 On Chassis Expansion CAN Bus
Quick Answer
Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Active Safety Control Module 2, Active Safety Control Module 2 harness is open or shorted, Active Safety Control Module 2 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
- U18B7 GMC indicates Lost Communication With Active Safety Control Module 2 On Chassis Expansion CAN Bus.
- Common causes
- Common causes include Faulty Active Safety Control Module 2, Active Safety Control Module 2 harness is open or shorted, Active Safety Control Module 2 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 U18B7 GMC Description
What are the Possible Causes of the DTC U18B7 GMC?
- Faulty Active Safety Control Module 2
- Active Safety Control Module 2 harness is open or shorted
- Active Safety Control Module 2 circuit poor electrical connection
How to Fix the DTC U18B7 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 U18B7 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 U18B7 GMC Code
1. What are common symptoms of OBDII code U18B7 GMC?
The common symptoms of OBDII code U18B7 GMC (Lost Communication With Active Safety Control Module 2 On Chassis Expansion CAN Bus) include issues with the vehicle's active safety control features, such as traction control, stability control, or anti-lock braking systems.
2. What are possible causes of code U18B7 GMC?
Possible causes of OBDII code U18B7 GMC include wiring or connection issues between the active safety control module and the chassis expansion CAN bus, a faulty active safety control module, or a problem with the chassis expansion CAN bus itself.
3. How can I diagnose OBDII code U18B7 GMC?
Diagnosing OBDII code U18B7 GMC typically involves using a diagnostic scanner to retrieve the code and then performing a thorough inspection of the wiring, connections, and components related to the active safety control module and the chassis expansion CAN bus.
4. Can I still drive my vehicle with code U18B7 GMC?
It is not recommended to drive your vehicle with OBDII code U18B7 GMC present, as it may affect the proper functioning of important safety systems. It is best to address the issue promptly to ensure the safety and performance of your vehicle.
5. How can I repair OBDII code U18B7 GMC?
Repairing OBDII code U18B7 GMC involves identifying and addressing the root cause of the communication loss between the active safety control module and the chassis expansion CAN bus. This may include repairing or replacing damaged wiring, fixing connection issues, or replacing faulty components.
6. Is it possible to reset OBDII code U18B7 GMC without repairs?
While clearing the trouble code may temporarily remove the warning light, the underlying issue causing OBDII code U18B7 GMC will likely persist. It is recommended to diagnose and repair the problem to prevent potential safety hazards and ensure the proper functioning of your vehicle.
7. Can a DIY enthusiast fix OBDII code U18B7 GMC?
Depending on your skill level and access to tools, a DIY enthusiast may be able to address OBDII code U18B7 GMC by checking wiring connections, performing basic electrical tests, and replacing components if needed. However, complex diagnostic procedures may require professional assistance.
8. How much does it cost to repair OBDII code U18B7 GMC?
The cost to repair OBDII code U18B7 GMC can vary depending on the specific cause of the issue and the labor rates in your area. It is recommended to obtain diagnostic information from a qualified technician to determine the exact repair cost.
9. Will OBDII code U18B7 GMC cause my vehicle to fail an emissions test?
OBDII code U18B7 GMC is related to communication issues with the active safety control module and does not directly affect emissions. However, a persistent issue with this code may indicate other underlying problems that could impact emissions performance.
10. How does OBDII code U18B7 GMC impact the overall safety of my vehicle?
OBDII code U18B7 GMC indicates a loss of communication with an essential safety control module, which can compromise the proper functioning of safety systems. Addressing this code promptly is crucial to maintaining the safety of your vehicle and its occupants.
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