U016B GMC Code - Lost Communication With Electric A/C Compressor Control Module
Quick Answer
Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Electric A/C Compressor Control Module, Electric A/C Compressor Control Module harness is open or shorted, Electric A/C Compressor 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
- U016B GMC indicates Lost Communication With Electric A/C Compressor Control Module.
- Common causes
- Common causes include Faulty Electric A/C Compressor Control Module, Electric A/C Compressor Control Module harness is open or shorted, Electric A/C Compressor 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 U016B GMC Description
What are the Possible Causes of the DTC U016B GMC?
- Faulty Electric A/C Compressor Control Module
- Electric A/C Compressor Control Module harness is open or shorted
- Electric A/C Compressor Control Module circuit poor electrical connection
How to Fix the DTC U016B 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 U016B 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 U016B GMC Code
1. What are the common symptoms of OBDII code U016B GMC?
- Common symptoms include a non-functioning electric A/C compressor, lack of cool air from the A/C system, and an illuminated check engine light.
2. What are the possible causes of OBDII code U016B GMC?
- The code may be triggered by issues such as a faulty electric A/C compressor control module, damaged wiring or connectors, or a communication breakdown between the module and the vehicle's ECM.
3. How can I diagnose the cause of OBDII code U016B GMC?
- Diagnosing the code typically involves conducting a thorough inspection of the electric A/C compressor control module, checking the wiring and connectors for damage, and using a diagnostic scanner to determine the communication status between the module and the ECM.
4. Can I still drive my vehicle with OBDII code U016B GMC present?
- It is not recommended to drive the vehicle with this code present, as it can lead to a malfunctioning A/C system, which may affect the comfort and safety of the vehicle occupants.
5. How can I repair OBDII code U016B GMC?
- Repair options may include replacing the electric A/C compressor control module, repairing any damaged wiring or connectors, and clearing the fault code with a diagnostic scanner.
6. Are there any DIY tips for fixing OBDII code U016B GMC?
- DIY enthusiasts can start by visually inspecting the wiring and connectors for any obvious damage before considering replacing the electric A/C compressor control module.
7. Is it necessary to reset the fault code after repairing OBDII code U016B GMC?
- Yes, it is important to clear the fault code using a diagnostic scanner after repairing the issue to reset the vehicle's ECM and ensure proper functionality of the A/C system.
8. Can extreme weather conditions contribute to triggering OBDII code U016B GMC?
- Yes, extreme heat or moisture can potentially damage the electric A/C compressor control module or cause communication issues, leading to the triggering of the fault code.
9. Is OBDII code U016B GMC a common issue in GMC vehicles?
- While not extremely common, the code can occur in GMC vehicles equipped with an electric A/C compressor control module, particularly in models with older or worn components.
10. Can a professional mechanic help with diagnosing and repairing OBDII code U016B GMC?
- Yes, consulting a professional mechanic is recommended for accurate diagnosis and repair of the code to ensure the A/C system functions properly and the issue does not recur.
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