Chevrolet U0285
Lost Communication with Active Grille Air Shutter 2 Motor Module • U1345: Engine Control Module LIN Bus 1 • U135A: Lost Communication with Shift to Park Range Actuator • U135E: Los
Quick answer
U0285 is identified in the supplied official GM/NHTSA bulletin evidence as “Lost Communication with Active Grille Air Shutter 2 Motor Module.” The same evidence also lists U1345, U135A, and U135E, but does not establish their complete meanings in the supplied excerpt.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does U0285 mean?
U0285 is identified in the supplied official GM/NHTSA bulletin evidence as “Lost Communication with Active Grille Air Shutter 2 Motor Module.” The same evidence also lists U1345, U135A, and U135E, but does not establish their complete meanings in the supplied excerpt.
2. Technical explanation
Verified evidence from NHTSA Manufacturer Communication PDF 10225708 (GM bulletin 15-NA-087, published October 25, 2022) lists U0285 as a lost-communication diagnostic trouble code for the Active Grille Air Shutter 2 Motor Module. The supplied evidence does not establish a root cause, diagnostic procedure, repair procedure, or functional consequence for this code.
3. What system is affected?
Active Grille Air Shutter 2 Motor Module communication. The diagnostic record does not provide a system name.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Arrange professional diagnosis if the code is present or recurring.
- Do not attempt high-voltage system repairs based on this code.
10. Step-by-step troubleshooting
- The supplied verified evidence does not establish owner-performed troubleshooting steps.
- A qualified service provider can diagnose the reported communication fault using applicable manufacturer procedures.
11. When to contact service
Service need is not established by the supplied diagnostic record; however, professional diagnosis is appropriate for a recurring communication DTC.
12. What the service center may check
- Verify the presence and status of U0285 and any accompanying DTCs with suitable diagnostic equipment.
- Use applicable Chevrolet/GM diagnostic information for the vehicle.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Chevrolet Bolt EUV · 2021–2023 · US
- Chevrolet Bolt EV · 2021–2023 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication PDF 10225708, GM bulletin 15-NA-087, published October 25, 2022, lists U0285: Lost Communication with Active Grille Air Shutter 2 Motor Module.
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
Verified source: NHTSA Manufacturer Communication PDF 10225708, GM bulletin 15-NA-087 (October 25, 2022): https://static.nhtsa.gov/odi/tsbs/2022/MC-10225708-0001.pdf. Verified applicability in the supplied database: 2021–2023 Chevrolet Bolt EV and 2021–2023 Chevrolet Bolt EUV in the United States.
19. Frequently asked questions
What does U0285 mean?
The supplied official bulletin evidence identifies U0285 as “Lost Communication with Active Grille Air Shutter 2 Motor Module.”
Which vehicles are verified as applicable?
The supplied database lists US-market 2021–2023 Chevrolet Bolt EV and 2021–2023 Chevrolet Bolt EUV.
Can I drive or charge with U0285?
Not yet established by verified evidence.
Does the supplied evidence identify the repair?
No. A repair resolution is not yet established by verified evidence.