Chevrolet C0040
Customer Concern Not Duplicated (CCND) Customer states steering noise / whine when turning at parking lot speeds at cold temperatures. Followed SI procedures
Quick answer
For this Chevrolet-specific record, C0040 is documented as a Customer Concern Not Duplicated (CCND) entry associated with a reported steering noise/whine during parking-lot-speed turns in cold temperatures, after SI procedures were followed. It is not established here as a conventional component-failure diagnosis.
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 C0040 mean?
For this Chevrolet-specific record, C0040 is documented as a Customer Concern Not Duplicated (CCND) entry associated with a reported steering noise/whine during parking-lot-speed turns in cold temperatures, after SI procedures were followed. It is not established here as a conventional component-failure diagnosis.
2. Technical explanation
Verified NHTSA-posted GM manufacturer communications for bulletin 22-NA-038 include the entry: “Steering - Customer Concern Not Duplicated (CCND) Customer states steering noise / whine when turning at parking lot speeds at cold temperatures. Followed SI procedures.” The supplied evidence also separately describes an example where C0035 and C0040 were stored as history in relation to low-amplitude front wheel-speed-sensor signals, the codes were cleared, and a test drive did not duplicate the concern. The evidence does not establish that every occurrence of C0040 has the same cause or that the steering-noise report and the wheel-speed-sensor-history example are the same fault condition.
3. What system is affected?
Chassis Systems / Steering, based on the verified bulletin entry. The supplied evidence also references front wheel-speed-sensor signal history in one non-duplicated test-drive example.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- Reported steering noise or whine when turning at parking-lot speeds in cold temperatures.
- In a separately described bulletin example, a customer reported Stabilitrak and traction-control lights, though the lights were not on at the time of service.
- In that example, the customer also reported a hard pedal, but the technician could not verify the concern.
6. Possible causes
- The verified evidence identifies this entry as Customer Concern Not Duplicated after SI procedures were followed; it does not establish a component-level cause for the steering noise/whine.
- One separately described example involved stored-history C0035 and C0040 entries relating to low-amplitude signals from both front wheel-speed sensors. This does not establish that these signals cause all C0040 records or the reported steering noise/whine.
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
- If the concern is present, have a Chevrolet service facility evaluate it using applicable SI procedures.
- Record the conditions under which the noise occurs, including cold temperature, low-speed turning, and whether any warning lamps are illuminated.
- Do not assume that a stored-history code alone confirms an active fault; the cited example states the concern was not duplicated on a test drive.
10. Step-by-step troubleshooting
- A technician followed SI procedures for the reported steering noise/whine in the verified CCND entry.
- In the separate bulletin example, the vehicle was scanned, stored-history C0035 and C0040 were found, the codes were cleared, and the vehicle was test driven; the concern was not duplicated.
11. When to contact service
Contact a Chevrolet service facility if the steering noise/whine is repeatable, warning lamps are present, or you want the condition assessed under applicable SI procedures.
12. What the service center may check
- Confirm the customer-reported operating conditions, including cold temperatures and parking-lot-speed turning.
- Follow applicable Chevrolet SI procedures, as stated in the verified CCND entry.
- If relevant to the vehicle’s complaint, scan for diagnostic codes and determine whether they are active or stored history.
- A test drive may be used to determine whether the reported concern can be duplicated; this was done in the separately described bulletin example.
13. Possible repair or resolution
- No repair resolution is established by the supplied verified evidence.
- For the steering-noise/whine entry, the verified outcome is that the customer concern was not duplicated after SI procedures were followed.
- For the separate wheel-speed-sensor-history example, the codes were cleared and the subsequent test drive did not duplicate the concern.
14. Affected vehicles
- Chevrolet Blazer · 2022–2024 · US
- Chevrolet Bolt EUV · 2022–2024 · US
- Chevrolet Bolt EUV · 2022–2023 · US
- Chevrolet Bolt EUV · 2022 · US
- Chevrolet Bolt EV · 2022–2023 · US
- Chevrolet Bolt EV · 2022 · US
- Chevrolet Bolt EV · 2022–2024 · US
- Chevrolet Equinox · 2022–2024 · US
15. Related TSBs / service bulletins
- GM bulletin 22-NA-038, published through NHTSA manufacturer communications on April 25, 2022; December 7, 2022; and October 2, 2023. The supplied evidence includes the steering CCND entry and a separate example involving stored-history C0035/C0040 entries.
- Official source: https://static.nhtsa.gov/odi/tsbs/2023/MC-10244276-0001.pdf
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified official source: NHTSA-posted GM manufacturer communication 22-NA-038: https://static.nhtsa.gov/odi/tsbs/2023/MC-10244276-0001.pdf
19. Frequently asked questions
What does C0040 mean in this verified Chevrolet record?
It is documented as “Customer Concern Not Duplicated (CCND)” for a report of steering noise/whine during low-speed turns in cold temperatures, after SI procedures were followed.
Does this evidence prove a steering component has failed?
No. The supplied evidence does not establish a failed steering component or another specific component-level cause.
Is C0040 always caused by a wheel-speed sensor problem?
No. The supplied bulletin evidence contains one separate example in which C0035 and C0040 were stored history relating to low-amplitude front wheel-speed-sensor signals. It does not establish that this applies to every C0040 occurrence.
Are there verified driving or charging restrictions?
Not yet established by verified evidence.