What does B1001 mean on a Chevy?

B1001. Option Configuration Error. Applies to Silverado, Sierra, Tahoe, Yukon, Impala, Malibu.

What causes B1001 on a Chevy?

Inflatable restraint sensing and diagnostic module (SDM) replaced without completing the setup procedure Primary data key mismatch between the SDM and the body control module (BCM) Used SDM installed from another vehicle carrying the wrong configuration Corrupted SDM memory after a low-voltage event or interrupted reflash

How do I fix B1001 on a Chevy?

Confirm with a Tech2 or GDS2 that B1001 is current in the SDM, not a stale history code Verify the SDM part number matches the vehicle VIN and option content Perform the SDM setup and configuration procedure per GM service information Check SDM powers, grounds, and serial data circuits before replacing the module Replace the SDM only if configuration fails with good wiring; SRS work should be done by a qualified technician

Code

B1001

Option Configuration Error

Category: Body
Severity: Body Warning Light
Applies to: Silverado, Sierra, Tahoe, Yukon, Impala, Malibu
Related: No single generic twin. See OBD Codes List

What it means

B1001. Option Configuration Error. This Chevy-enhanced code applies to Silverado, Sierra, Tahoe, Yukon, Impala, Malibu.

Findings, check these first

Inflatable restraint sensing and diagnostic module (SDM) replaced without completing the setup procedure
Primary data key mismatch between the SDM and the body control module (BCM)
Used SDM installed from another vehicle carrying the wrong configuration
Corrupted SDM memory after a low-voltage event or interrupted reflash

Standard procedure

Confirm with a Tech2 or GDS2 that B1001 is current in the SDM, not a stale history code
Verify the SDM part number matches the vehicle VIN and option content
Perform the SDM setup and configuration procedure per GM service information
Check SDM powers, grounds, and serial data circuits before replacing the module
Replace the SDM only if configuration fails with good wiring; SRS work should be done by a qualified technician

Look up another code

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Sources and review

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Last updated 2026-09-25.

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