Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 6 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B1019CIRCUIT/SYSTEM TESTING
2009 Chevrolet Tahoe Base, 4.8 C
Circuit/System Testing
2009 Chevrolet Tahoe Base, 4.8 CSECTION Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
If DTC B1001 is set current, diagnose that fault prior to following this diagnostic procedure.
DTC B1019 3A
- If the vehicle is equipped with a PPS system, verify the PPS indicator is present.
- If not present, install the PPS status indicator
- Verify the PPS Indicator operates as indicated in the SIR System Description and Operation .
- If operation differs from that outlined in the Description and Operation, correct the fault in the PPS indicator circuit; refer to Passenger Presence System Indicator Circuit Malfunction to correct the condition.
DTC B1019 00
- Verify that the vehicle is equipped with all the SIR components it was configured for.
- Restore the vehicle to the original content and perform the Setup New SDM special function in the scan tool.
- Remove the SDM connector and verify the SDM connector is in good condition and has no bent pins, terminals or shorting bars.
- If damage is found, repair the bent pins, terminals or shorting bars as needed and then perform the Setup New SDM special function in the scan tool.
- Verify the correct SDM part number was installed.
- If wrong SDM was installed, replace SDM
- Verify the SDM was programmed with the correct software.
- If SDM was not programmed correctly, reprogram SDM. Use the Scan Tool to program the SDM. Refer to Repair Instructions for programming procedure.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.