Chevrolet U1534
it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a v
Quick answer
For the 2017–2018 Chevrolet Bolt EV in the US, verified GM bulletin 16NA407 identifies U1534 as an associated BCM fault that matters when evaluating U0422. The supplied evidence does not establish U1534’s standalone definition, symptoms, driving or charging status, cause, or repair.
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 U1534 mean?
For the 2017–2018 Chevrolet Bolt EV in the US, verified GM bulletin 16NA407 identifies U1534 as an associated BCM fault that matters when evaluating U0422. The supplied evidence does not establish U1534’s standalone definition, symptoms, driving or charging status, cause, or repair.
2. Technical explanation
GM bulletin 16NA407 states that CCM/ICCM U0422 may be ignored with no service necessary unless U0422 is current/active or accompanied by BCM faults U1534 or U1538. The bulletin therefore establishes U1534 as a BCM fault relevant to the bulletin’s U0422 decision process. It does not provide a standalone description or diagnostic procedure for U1534 in the supplied evidence.
3. What system is affected?
Body Control Module (BCM) is identified in the bulletin context. No further system identification is established by verified evidence.
4. How serious is this code?
Not yet established by verified evidence. The bulletin indicates U1534 should not be treated the same as an unaccompanied, non-current U0422 during the bulletin’s evaluation.
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
- Have a qualified Chevrolet/GM service technician evaluate the code if it is present.
- Do not assume that the no-service guidance for U0422 applies when BCM fault U1534 is also present.
10. Step-by-step troubleshooting
- Verify whether U0422 is current/active and whether BCM fault U1534 is present, as specified by GM bulletin 16NA407.
- Further diagnostic steps for U1534 are not established by the supplied verified evidence.
11. When to contact service
Contact a qualified Chevrolet/GM service technician for diagnosis. GM’s bulletin states that its bulletins are intended for professional technicians, not do-it-yourselfers.
12. What the service center may check
- Check for a current/active U0422.
- Check whether U1534 or U1538 is present as an associated BCM fault.
- No additional service checks for U1534 are established by the supplied verified evidence.
13. Possible repair or resolution
- For U0422 alone, GM bulletin 16NA407 says no service is necessary when it is not current/active and is not accompanied by BCM faults U1534 or U1538.
- A repair or resolution for U1534 itself is not established by verified evidence.
14. Affected vehicles
- Chevrolet Bolt EV · 2017–2018 · US
- Chevrolet Bolt EV · 2017 · US
15. Related TSBs / service bulletins
- GM bulletin 16NA407, published in NHTSA manufacturer communications as MC-10111775, MC-10134574, and MC-10134573. It applies to the supplied 2017–2018 US Chevrolet Bolt EV applicability and addresses evaluation of U0422 in relation to BCM faults U1534 and U1538.
- Source: https://static.nhtsa.gov/odi/tsbs/2017/MC-10134573-9999.pdf
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official NHTSA-hosted GM communication: https://static.nhtsa.gov/odi/tsbs/2017/MC-10134573-9999.pdf
19. Frequently asked questions
What does U1534 mean on a Chevrolet Bolt EV?
A standalone meaning is not yet established by the supplied verified evidence. GM bulletin 16NA407 identifies it as a BCM fault associated with the evaluation of U0422.
Does U1534 require service?
Not yet established by verified evidence. GM only states that U0422 should not be ignored when it is accompanied by BCM faults U1534 or U1538.
Can a 2017–2018 Bolt EV be driven or charged with U1534?
Not yet established by verified evidence.