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 MANUALSCHEVROLET2025SUBURBAN LS, RWDREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSELECTRONIC TRANSMISSION RANGE SELECTDIAGNOSTIC INFORMATION AND PROCEDURESDTC P16F4CIRCUIT/SYSTEM VERIFICATION
2025 Chevrolet Suburban LS, RWD
Circuit/System Verification
2025 Chevrolet Suburban LS, RWDSECTION Circuit/System Verification
- Verify there are no communication DTCs set.
- If there are communication DTCs set
- Go to next step: If there are no communication DTCs set
- Check for updated software in K45 Powertrain Control Module.
- If software is not current
Perform the programming for the K45 Powertrain Control Module.
- Go to next step: If software is up to date
- If software is not current
- Replace the K45 Powertrain Control Module
RENDER: 1.0x
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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.