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 MANUALSCHEVROLET2006SUBURBAN K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1942 (HYBRID/EV CONTROL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B009FCIRCUIT/SYSTEM VERIFICATION
2006 Chevrolet Suburban K2500, 6.0 U
Circuit/System Verification
2006 Chevrolet Suburban K2500, 6.0 USECTION Circuit/System Verification
WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that DTC B009F 00, B009F 4A, or B009F 73 is not set.
- If the DTC is set, program the serial data gateway module. If the DTC resets, replace the serial data gateway module.
- Verify the serial data gateway module is programmed with the correct software calibration.
- If the correct software is not installed, program the serial data gateway module.
- Ignition ON, observe the scan tool Hybrid Crash Sensor 1 parameter. The reading should be No Crash.
- If not No Crash, refer to Circuit/System Testing.
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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.