U2099 GMC Code - High Speed Communication Enable Circuit
Quick Answer
The Body Control Module (BCM) activates the ignition circuit, when the ignition key is in ACC, ON or START. Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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
- U2099 GMC indicates High Speed Communication Enable Circuit.
- Common causes
- Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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 U2099 GMC Description
What are the Possible Causes of the DTC U2099 GMC?
- Faulty Body Control Module (BCM)
- Body Control Module harness is open or shorted
- Body Control Module circuit poor electrical connection
How to Fix the DTC U2099 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 U2099 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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Information for Specific GMC Models
- U2099 2014 GMC Sierra — High Speed Communication Enable Circuit
- U2099 2015 GMC Sierra — High Speed Communication Enable Circuit
- U2099 2016 GMC Sierra — High Speed Communication Enable Circuit
- U2099 2017 GMC Sierra — High Speed Communication Enable Circuit
- U2099 2018 GMC Sierra — High Speed Communication Enable Circuit
Frequently Asked Questions about U2099 GMC Code
1. What are the common symptoms of OBDII code U2099 in a GMC vehicle?
Symptoms may include intermittent or complete loss of communication with high-speed vehicle modules, illuminated warning lights on the dashboard, and issues with the vehicle's performance.
2. What can cause OBDII code U2099 to trigger in a GMC vehicle?
The code U2099 typically triggers due to a faulty high-speed communication enable circuit, damaged wiring or connectors, issues with the high-speed bus network, or a malfunctioning control module.
3. How can I diagnose the OBDII code U2099 in my GMC vehicle?
Diagnosis involves using a professional OBDII scanner to retrieve the code, inspecting the wiring and connectors related to the high-speed communication circuit, and testing the control modules for proper function.
4. Are there any common repair tips for resolving OBDII code U2099 in a GMC vehicle?
Repair tips include checking and repairing any damaged wiring or connectors, ensuring proper ground connections, resetting fault codes after repairs, and retesting the vehicle to confirm the issue is resolved.
5. Can driving with OBDII code U2099 in a GMC vehicle cause further damage?
Continuing to drive with the U2099 code may lead to further communication issues between vehicle modules, potentially affecting the overall performance and safety systems of the vehicle. It is recommended to address the issue promptly.
6. How much does it typically cost to repair OBDII code U2099 in a GMC vehicle?
The cost of repair can vary depending on the underlying cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to consult with a professional mechanic for an accurate estimate.
7. Is it possible to clear the OBDII code U2099 in a GMC vehicle without addressing the underlying issue?
While it is possible to clear the code temporarily using an OBDII scanner, the underlying issue causing the code will persist and may trigger the code again in the future. It is recommended to diagnose and repair the root cause of the problem.
8. Can a DIY enthusiast with basic automotive knowledge repair OBDII code U2099 in a GMC vehicle?
Depending on the specific issue causing the code, some DIY enthusiasts with basic automotive knowledge may be able to address simple wiring or connector problems. However, complex issues may require professional diagnosis and repair.
9. How long does it typically take to repair OBDII code U2099 in a GMC vehicle?
The repair time can vary based on the complexity of the issue, the availability of parts, and the expertise of the mechanic. Simple repairs may take a few hours, while more involved diagnostics and repairs could take longer.
10. Are there any recalls or technical service bulletins related to OBDII code U2099 in GMC vehicles?
Recalls or technical service bulletins related to the U2099 code can vary by model year and specific vehicle. It is advisable to check with a GMC dealership or online resources for any relevant information regarding recalls or service bulletins.
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