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Chevrolet B1000 SYM00

2 • DPID 11 Byte2: • DPID 11 Byte3: • DPID 11 Byte4: Impor

Common search variants: B1000SYM00 · B1000-SYM00 · B1000_SYM00 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService is appropriate when B1000 SYM00 is present because the verified GM communications call for vehicle-specific VCIM B1000 data and documentation of the customer concern. Whether service is urgently required is not yet established by verified evidence.
Confidence95%

Quick answer

B1000 SYM00 is referenced by GM/NHTSA manufacturer communications as a DTC that requires the sub-code to be recorded. For GM LAN vehicles, the bulletin directs technicians to capture VCIM B1000 data, including DPID 11 Bytes 1–4. The supplied evidence does not establish a specific component failure, driving risk, charging risk, 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 B1000 SYM00 mean?

B1000 SYM00 is referenced by GM/NHTSA manufacturer communications as a DTC that requires the sub-code to be recorded. For GM LAN vehicles, the bulletin directs technicians to capture VCIM B1000 data, including DPID 11 Bytes 1–4. The supplied evidence does not establish a specific component failure, driving risk, charging risk, or repair.

2. Technical explanation

The verified GM manufacturer communications state that, when DTC B1000 is found, the technician should document the original customer concern and record the sub-code; B1000 SYM00 is given as an example. For applicable GM LAN vehicles, the communications direct technicians to access: Body > Vehicle Communications Interface Module > Special Functions > B1000 Data, and record DPID 11 Byte1, Byte2, Byte3, and Byte4. The evidence also identifies questions that may be relevant to the concern: what happens during an OnStar key press, whether the system connects, and whether OnStar has a current GPS location on a key press. No interpretation of the individual DPID bytes is provided in the supplied evidence.

3. What system is affected?

The verified communications refer to the Vehicle Communications Interface Module (VCIM), OnStar key-press operation, and GPS-location status. A broader system classification is not yet established by verified evidence.

4. How serious is this code?

Unknown. Severity is not established by the supplied verified evidence.

5. Symptoms you may notice

  • A B1000 DTC may be discovered during diagnosis; the verified communications instruct the technician to document the original customer concern.
  • The communications identify OnStar key-press behavior, connection status, and current GPS location as diagnostic questions. They do not establish these as required symptoms of B1000 SYM00.

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

  • Record the complete code, including the SYM00 sub-code.
  • Document the original customer concern that led to discovery of the DTC.
  • Seek diagnosis by a qualified GM service facility or technician able to retrieve the required VCIM B1000 data.

10. Step-by-step troubleshooting

  1. For GM LAN vehicles, retrieve B1000 Data through Body > Vehicle Communications Interface Module > Special Functions > B1000 Data.
  2. Record DPID 11 Byte1, DPID 11 Byte2, DPID 11 Byte3, and DPID 11 Byte4.
  3. Document what occurs when an OnStar key press is made, whether the system connects, and whether OnStar reports a current GPS location on a key press.
  4. The supplied communication states that this data is not available on Chevrolet Colorado and GMC Canyon; no further availability limitations are established by the supplied evidence.

11. When to contact service

Service is appropriate when B1000 SYM00 is present because the verified GM communications call for vehicle-specific VCIM B1000 data and documentation of the customer concern. Whether service is urgently required is not yet established by verified evidence.

12. What the service center may check

  • Confirm and record the B1000 sub-code, such as B1000 SYM00.
  • Document the original customer concern.
  • Retrieve and record VCIM B1000 Data: DPID 11 Bytes 1–4, when available.
  • Assess OnStar key-press operation, connection status, and current GPS-location status as described in the GM communication.

13. Possible repair or resolution

  • Not yet established by verified evidence. The supplied communications provide information-gathering steps, not a confirmed repair procedure or parts replacement.

14. Affected vehicles

15. Related TSBs / service bulletins

  • GM manufacturer communication 03-08-46-004Q, published by NHTSA as MC-10140294 on 2017-08-22.
  • GM manufacturer communication 03-08-46-004T, published by NHTSA as MC-10140295 on 2017-08-22.
  • GM manufacturer communication 03-08-46-004S, published by NHTSA as MC-10116534 on 2017-01-12.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official NHTSA-hosted GM communications: https://static.nhtsa.gov/odi/tsbs/2017/MC-10140294-9999.pdf ; https://static.nhtsa.gov/odi/tsbs/2017/MC-10140295-9999.pdf ; https://static.nhtsa.gov/odi/tsbs/2017/MC-10116534-9999.pdf

19. Frequently asked questions

What does B1000 SYM00 mean?

The supplied evidence confirms it is a B1000 DTC with sub-code SYM00, used as an example in GM communications. A specific fault definition beyond that is not yet established by verified evidence.

What information should be captured for B1000 SYM00?

GM directs technicians to record the sub-code and, on GM LAN vehicles where available, VCIM B1000 Data consisting of DPID 11 Bytes 1–4.

Does B1000 SYM00 mean the vehicle is unsafe to drive or charge?

Not yet established by verified evidence.

Is B1000 SYM00 related to OnStar?

The verified communications direct technicians to document OnStar key-press behavior, connection status, and GPS-location status while diagnosing B1000. They do not establish a definitive cause or failure of the OnStar system.

20. Sources & verification

Verified
Chevrolet B1000 SYM00: 2 • DPID 11 Byte2: • DPID 11 Byte3: • DPID 11… | EV Diagnostics