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 MANUALSCHEVROLET2013SILVERADO 2500 HD LT, 2D CAB CHASSIS, 6.6L ENG VIN 8, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2738 (OBJECT DETECTION SYSTEM AND PEDESTRIAN PROTECTION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P15F7: REAR OBJECT DETECTION CONTROL MODULE TORQUE REQUEST SIGNAL MESSAGE COUNTERCIRCUIT/SYSTEM VERIFICATION
2013 Chevrolet Silverado 2500 HD LT, 2D Cab Chassis, 6.6L Eng VIN 8, RWD
Circuit/System Verification
2013 Chevrolet Silverado 2500 HD LT, 2D Cab Chassis, 6.6L Eng VIN 8, RWDSECTION Circuit/System Verification
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 GMC Sierra 3500 HD, 2016 GMC Sierra 2500 HD, 2016 GMC Sierra 1500, 2016 Chevrolet Silverado 3500 HD, and 2016 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- DTC P15F7 is an informational DTC.
- Diagnose all other K20 Engine Control Module DTCs prior to DTC P15F7.
- Verify there are no other K20 Engine Control Module or communication DTCs set.
- If a DTC is set
- If a DTC is not set
- Complete the diagnosis by looking for an intermittent serial data circuit fault. Refer to Scan Tool Does Not Communicate with High Speed GMLAN Device
.
- If an intermittent serial data circuit fault is found
Repair as necessary.
- If an intermittent serial circuit fault is not found
- If an intermittent serial data circuit fault is found
- Clear DTCs and operate the vehicle in the conditions that the customer experienced.
- Verify DTC P15F7 does not set.
- If the DTC sets
Replace K41R Rear Parking Assist Control Module.
- If the DTC does not set
- If the DTC sets
- 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.