Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer can't recognize the car's unique ID number, which can cause problems with how it works.
The vehicle's Body Control Module (BSCM) is not recognizing the Vehicle Identification Number (VIN) correctly, which can lead to communication issues within the vehicle's systems.
The C0545 code indicates that the Body Control Module (BSCM) has detected that the VIN is either not programmed or incompatible. This can occur if the module was replaced and not properly programmed, or if there is a communication error between the module and the vehicle's network.
• Warning lights on the dashboard
• Inoperative vehicle systems controlled by the BSCM
• Intermittent electrical issues
• BSCM not programmed with the correct VIN
• Faulty BSCM
• Communication issues in the vehicle's network
VIN: Vehicle Identification Number, a unique code for each vehicle.
BSCM: Body Control Module, a computer that controls various electronic components in the vehicle.
• Check for any other related codes.
• Verify that the BSCM is properly programmed with the correct VIN.
• Inspect the wiring and connections to the BSCM.
• Reprogram the BSCM with the correct VIN.
• Replace the BSCM if it is faulty.
• Repair any damaged wiring or connectors.
• OBD-II scanner
• Multimeter
• Programming tool for BSCM
$150 - $600
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Ensure proper programming of modules after replacement.
• Regularly check for software updates.
• Maintain good electrical connections.
Communication Error
• Have the vehicle checked by a professional if warning lights appear.
• Ensure any replaced modules are correctly programmed.
• Keep a record of any module replacements or reprogramming.
Check with the vehicle manufacturer for warranty coverage on electronic control modules.
This code has been more common in vehicles with replaced or reprogrammed control modules.
Moderate – This issue can affect vehicle functionality but is not immediately dangerous.
Operating a vehicle with unresolved electronic issues may lead to further damage or safety concerns.
• Vehicle ignition in the 'On' position.
• Ensure all electrical systems are functioning during testing.
The Body Control Module (BSCM) is typically located under the dashboard or in the engine compartment.
Q: Can I drive with a C0545 code?
A: It is possible to drive, but it is recommended to fix the issue to avoid further problems.
Q: How do I know if the BSCM needs replacing?
A: If reprogramming does not solve the issue, the BSCM may need replacement.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Body and airbag faults often need a scanner that can access more than generic powertrain codes.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking power, ground, and continuity in body-system circuits.
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Universal · Fuse kit
Useful for electrical diagnosis when blown fuses or circuit faults are part of the troubleshooting process.
Useful when body electrical faults trace back to blown fuses or shared circuits.
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