U0077 2018 Chevrolet Silverado Code - Control Module Communication Chassis Expansion CAN Bus
Quick Answer
The devices connected to the chassis high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Check for more codes, Faulty Control Module, Control Module harness is open or shorted. 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
- U0077 2018 Chevrolet Silverado indicates Control Module Communication Chassis Expansion CAN Bus.
- Common causes
- Common causes include Check for more codes, Faulty Control Module, Control Module harness is open or shorted.
- 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 U0077 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC U0077 2018 Chevrolet Silverado?
- Check for more codes
- Faulty Control Module
- Control Module harness is open or shorted
- Control Module circuit poor electrical connection
How to Fix the DTC U0077 2018 Chevrolet Silverado?
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 U0077 2018 Chevrolet Silverado 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.
Need more information about the U0077 2018 Chevrolet Silverado code?
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Frequently Asked Questions about U0077 2018 Chevrolet Silverado Code
1. What does the OBDII code U0077 on a 2018 Chevrolet Silverado indicate?
The code U0077 indicates a communication problem with the Control Module Communication Chassis Expansion CAN Bus.
2. What are the common symptoms of the U0077 code on a 2018 Chevrolet Silverado?
Common symptoms include dashboard warning lights, loss of communication with various control modules, erratic behavior of electronic components, and potential drivability issues.
3. What are the possible causes of the U0077 code on a 2018 Chevrolet Silverado?
Potential causes include damaged wiring or connectors in the CAN bus system, faulty control modules, software issues, water intrusion, or corrosion in the communication network.
4. How do you diagnose the U0077 code on a 2018 Chevrolet Silverado?
Diagnosis involves using a professional OBDII scanner to retrieve the trouble codes, inspecting the CAN bus wiring and connectors for damage, checking control module communication, and performing software updates if necessary.
5. Can the U0077 code on a 2018 Chevrolet Silverado be fixed at home?
While basic checks like inspecting wiring and connectors can be done at home, resolving the U0077 code may require advanced diagnostic tools and software updates that are typically performed by trained technicians.
6. Is it safe to drive with the U0077 code present on a 2018 Chevrolet Silverado?
It is not advisable to drive with the U0077 code active, as it may lead to unpredictable behavior of electronic systems in the vehicle, potentially compromising safety and performance.
7. How much does it cost to repair the U0077 code on a 2018 Chevrolet Silverado?
The cost of repair can vary depending on the underlying cause of the issue. It is recommended to consult a professional technician for an accurate diagnosis and cost estimate.
8. Can resetting the U0077 code on a 2018 Chevrolet Silverado make it go away permanently?
Simply clearing the code without addressing the root cause of the communication issue will likely result in the code reappearing. It is essential to diagnose and resolve the underlying problem to prevent future occurrences.
9. Are there any recalls or technical service bulletins related to the U0077 code on a 2018 Chevrolet Silverado?
It is recommended to check with the manufacturer or authorized service centers for any relevant recalls or technical service bulletins related to the U0077 code on your specific vehicle model.
10. How long does it take to repair the U0077 code on a 2018 Chevrolet Silverado?
The repair time can vary based on the complexity of the issue and the availability of parts. Some cases may be resolved quickly, while others may require more extensive diagnostics and repairs, potentially taking longer to complete.
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