B1160 GMC Code - SDM Calibration Mismatch
Quick Answer
The B1160 GMC code refers to a SDM (Sensing and Diagnostic Module) Calibration Mismatch. Common causes include Software malfunction in the SDM module, Electrical wiring issues affecting communication with the SDM, Sensor calibration errors. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B1160 GMC indicates SDM Calibration Mismatch.
- Common causes
- Common causes include Software malfunction in the SDM module, Electrical wiring issues affecting communication with the SDM, Sensor calibration errors.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code B1160 GMC Description
The B1160 GMC code refers to a SDM (Sensing and Diagnostic Module) Calibration Mismatch. The SDM is a crucial component of the vehicle's airbag system, responsible for detecting collisions and deploying airbags when necessary. When this code is triggered, it means that there is a discrepancy between the calibration data stored in the SDM and the actual parameters of the vehicle. This can lead to issues with the proper deployment of airbags in the event of a crash, compromising the safety of the vehicle occupants.
Common Causes of B1160 GMC
- Software malfunction in the SDM module
- Electrical wiring issues affecting communication with the SDM
- Sensor calibration errors
- Impact or damage to the SDM module
- Faulty airbag deployment system components
Symptoms of B1160 GMC
- Airbag warning light illuminated on the dashboard
- Inconsistent or erratic airbag deployment
- Faulty communication with the SDM module
- Loss of power to the airbag system
- Vehicle fails to pass airbag system diagnostics during inspection
How to Fix B1160 GMC
- Use a diagnostic scanner to retrieve the specific error codes and identify the root cause of the calibration mismatch.
- Inspect the electrical connections and wiring related to the SDM module for any signs of damage or corrosion. Repair or replace as needed.
- Check and recalibrate the sensors associated with the airbag system to ensure they are functioning correctly.
- Update the software in the SDM module to the latest version provided by the manufacturer.
- Clear the error codes and perform a test to verify that the calibration mismatch issue has been resolved.
Cost to Fix B1160 GMC
The typical repair costs for addressing a B1160 GMC code can range from $200 to $500, depending on the extent of the issue and the specific repairs needed. This estimate includes parts and labor costs. However, it's important to note that the actual cost can vary based on factors such as the location of the repair shop, the make and model of the vehicle, and the complexity of the repair. Additionally, diagnostic time and labor rates at auto repair shops can range from $80 to $150 per hour, with rates potentially higher at dealerships or in metropolitan areas. It's recommended to obtain quotes from local shops for a more accurate estimate.
Tech Notes for B1160 GMC
If DTCs B1155 and B1159 are set, SDM is receiving the wrong message from Standard Body Module (SBM).
If DTCs B1155 and B1160 are set, SDM is receiving the wrong message from Powertrain Control Module (PCM).
If DTC B1159 sets alone, SDM did not receive a message from SBM.
If DTC B1160 sets alone, SDM did not receive a message from PCM.
If DTCs B1159 and B1160 are set without DTC B1155, SDM did not receive messages from SBM or PCM.
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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
Frequently Asked Questions about B1160 GMC Code
1. What are the common symptoms of OBDII code B1160 GMC (SDM Calibration Mismatch)?
The common symptoms include the airbag warning light staying illuminated on the dashboard and potential issues with the vehicle's airbag system.
2. What could cause the OBDII code B1160 GMC (SDM Calibration Mismatch)?
This code is typically caused by a mismatch between the calibration of the Sensing and Diagnostic Module (SDM) and other components in the airbag system.
3. How serious is the OBDII code B1160 GMC (SDM Calibration Mismatch)?
This code indicates a potential issue with the airbag system, which is a crucial safety feature in the vehicle. It is important to address this issue promptly to ensure the airbags deploy correctly in case of an accident.
4. Can I still drive my vehicle with the OBDII code B1160 GMC (SDM Calibration Mismatch)?
It is not recommended to drive the vehicle with an active airbag system fault code, as it could compromise the effectiveness of the airbags in the event of a collision.
5. How can I diagnose and repair the OBDII code B1160 GMC (SDM Calibration Mismatch)?
Diagnosing and repairing this code often requires specialized diagnostic tools and knowledge of the airbag system. It is advisable to consult a qualified mechanic or dealership for proper diagnosis and repair.
6. Is it possible to reset the OBDII code B1160 GMC (SDM Calibration Mismatch) on my own?
While it may be possible to clear the code using an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.
7. Are there any safety precautions I should take if I suspect the OBDII code B1160 GMC (SDM Calibration Mismatch)?
If you suspect an issue with the airbag system, it is essential to avoid tampering with the system and seek professional assistance to ensure the airbags function correctly in an emergency.
8. How much does it typically cost to repair the OBDII code B1160 GMC (SDM Calibration Mismatch)?
The cost of repairing this code can vary depending on the root cause of the issue, parts needed for replacement, and labor costs. It is recommended to obtain a quote from a trusted repair facility.
9. Can the OBDII code B1160 GMC (SDM Calibration Mismatch) be a recurring problem?
If the root cause of the calibration mismatch is not addressed properly, the code may reoccur. It is crucial to diagnose and repair the underlying issue to prevent the code from returning.
10. Is the OBDII code B1160 GMC (SDM Calibration Mismatch) a common problem in GMC vehicles?
While this code may not be as common as some other OBDII codes, issues related to airbag system calibration mismatches can occur in GMC vehicles and should be addressed promptly for safety reasons.
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