U0073 on CHEVROLET TRAVERSE — Control Module Communication Bus A Off

Q: "What does U0073 mean on a CHEVROLET TRAVERSE?"

"U0073 indicates: Control Module Communication Bus A Off. This is a network communication code. 2 CHEVROLET TRAVERSE owners have reported this to NHTSA."

Q: "What are the most common causes of U0073 on CHEVROLET TRAVERSE?"

"Based on 2 NHTSA reports, the most commonly cited components are: Engine, Electrical System,Service Brakes,Engine. These percentages are based on the component field in owner complaints."

Q: "Is U0073 serious on my CHEVROLET TRAVERSE?"

"Of 2 NHTSA reports for this code on CHEVROLET TRAVERSE, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my CHEVROLET TRAVERSE shows U0073?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What U0073 Means on Your CHEVROLET TRAVERSE

U0073 is a diagnostic trouble code indicating: Control Module Communication Bus A Off. This code relates to the network communication system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

2 CHEVROLET TRAVERSE owners have reported this issue to NHTSA across model years 2010-2024. Most reports come from the 2010, 2024 model years. The most commonly reported component is Engine (50.0% of reports).

Real CHEVROLET TRAVERSE Owner Reports

Source: NHTSA Complaints Database

"Traction control warning light flashed on and off several times. when it was on the steering became difficult. tried to pass a slow moving truck. engine rpms when up but vehicle did not accelerate. check engine light came on."

— 2010 CHEVROLET TRAVERSE owner · ENGINE · Filed 09/11/2015

"Incident 1 - Dashboard Electrical Failure Date: June 11, 2025 Mileage: approx. 10,000 Problem: Multiple dashboard error lights activated simultaneously, including false "dead battery" warnings despite the vehicle starting normally."

— 2024 CHEVROLET TRAVERSE owner · ELECTRICAL SYSTEM,SERVICE BRAKES,ENGINE · Filed 06/11/2025

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1

'10

1

'24

Common Causes on CHEVROLET TRAVERSE

Based on NHTSA complaint component analysis for this vehicle.

ENGINE 50%

ELECTRICAL SYSTEM,SERVICE BRAKES,ENGINE 50%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does U0073 mean on a CHEVROLET TRAVERSE? ▾

U0073 indicates: Control Module Communication Bus A Off. This is a network communication code. 2 CHEVROLET TRAVERSE owners have reported this to NHTSA.

What are the most common causes of U0073 on CHEVROLET TRAVERSE? ▾

Based on 2 NHTSA reports, the most commonly cited components are: Engine, Electrical System,Service Brakes,Engine. These percentages are based on the component field in owner complaints.

Is U0073 serious on my CHEVROLET TRAVERSE? ▾

Of 2 NHTSA reports for this code on CHEVROLET TRAVERSE, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my CHEVROLET TRAVERSE shows U0073? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.