U0159 GMC Code - Lost Communication With Parking Assist 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 Parking Assist Control Module, Parking Assist Control Module harness is open or shorted, Parking Assist 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
- U0159 GMC indicates Lost Communication With Parking Assist Control Module.
- Common causes
- Common causes include Faulty Parking Assist Control Module, Parking Assist Control Module harness is open or shorted, Parking Assist 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 U0159 GMC Description
What are the Possible Causes of the DTC U0159 GMC?
- Faulty Parking Assist Control Module
- Parking Assist Control Module harness is open or shorted
- Parking Assist Control Module circuit poor electrical connection
How to Fix the DTC U0159 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 U0159 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 U0159 GMC Code
1. What does the OBDII code U0159 mean on a GMC?
U0159 indicates that the vehicle has lost communication with the Parking Assist Control Module, which could affect parking assistance features.
2. What are common symptoms of code U0159 in a GMC vehicle?
Symptoms may include parking assist features not working, warning lights on the dashboard, or a "Service Parking Assist" message.
3. What causes the U0159 code to appear on a GMC?
Common causes include faulty wiring or connectors, a malfunctioning Parking Assist Control Module, or a failure in the CAN (Controller Area Network) communication system.
4. Can I still drive my GMC with the U0159 code active?
Yes, you can still drive the vehicle, but parking assist features may not function, making parking more challenging.
5. How can I diagnose the U0159 code in my GMC vehicle?
Start by checking the wiring and connectors around the Parking Assist Control Module for damage or corrosion. Use a scan tool to confirm the module's communication status.
6. What should I inspect first when troubleshooting the U0159 code?
Inspect the Parking Assist Control Module's power supply, ground connections, and the CAN bus wiring for loose connections or damage.
7. How do I fix the U0159 code on my GMC vehicle?
Repairs may include replacing damaged wiring or connectors, reprogramming the module, or replacing the Parking Assist Control Module if it's faulty.
8. Can a dead battery cause the U0159 code on a GMC?
Yes, a low or dead battery can disrupt communication between modules and trigger the U0159 code.
9. Do I need to replace the Parking Assist Control Module for the U0159 code?
Not always. The issue might be with wiring, connectors, or software. Have a professional diagnose the problem before replacing the module.
10. Can clearing the U0159 code solve the issue permanently?
Clearing the code may temporarily remove it, but if the underlying issue isn’t resolved, the code will return.
Discuss the causes and fixes for U0159 GMC OBDII Code
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