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 MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 5 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)DIAGNOSTIC TESTSDTC B1071: INTERNAL SDM FAILURENOTES
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8
DTC B1071: Internal SDM Failure: Notes
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Notes
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 GMC Savana Special, 2000 GMC Savana Camper Special, 2000 GMC Savana, 2000 Chevrolet RV Cutaway, and 2000 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
When DTC B1018 or B1024 has been set, DTC B1071 sets, and SDM must be replaced. When scan tool CLEAR CODES is received and malfunction no longer exists, DTCs B1018 or B1024 and B1071 will remain current. Ensure short to ground condition is repaired prior to installing replacement SDM to avoid damage to component.
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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.