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 MANUALSGMC2021SAVANA 2500 LS, 6.6L ENG VIN 7REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 38 (PROGRAMMING AND SETUP)REPAIR INSTRUCTIONSK73 TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE: PROGRAMMING AND SETUP (WITHOUT CV3/EF7/Z49)UNSUCCESSFUL PROGRAMMING RECOVERY
2021 GMC Savana 2500 LS, 6.6L Eng VIN 7
Unsuccessful Programming Recovery
2021 GMC Savana 2500 LS, 6.6L Eng VIN 7SECTION Unsuccessful Programming Recovery
WARNING: This page is about a different car, the 2022 GMC Savana 3500, 2022 GMC Savana 2500, 2022 Chevrolet Express 3500, and 2022 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
In the event of an interrupted or unsuccessful programming event, perform the following steps:
- Ignition ON. Ensure the control module, DLC and programming tool connections are secure and the SPS software is up to date.
- Verify the control module can be reprogrammed.
- If the control module cannot be reprogrammedÂ
- Ignition OFF for one minute, ignition ON.
- Verify the control module can be reprogrammed.
- If the control module cannot be reprogrammed, replace the control module.
- Go to next step: If the control module can be reprogrammed.
- All OK.
- Go to next step: If the control module can be reprogrammedÂ
- All OK.
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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.