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 MANUALSCHEVROLET1997FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSMISSION DIAGNOSIS - 4L80-E (GASOLINE - 4 DIGIT CODES)SELF-DIAGNOSTICSDTC P0724: BRAKE SWITCH CIRCUIT HIGH INPUTCONDITIONS FOR SETTING DTC P0724
1997 Chevrolet Forward Control 5.7 R, Automatic
Conditions For Setting DTC P0724
1997 Chevrolet Forward Control 5.7 R, AutomaticSECTION Conditions For Setting DTC P0724
DTC will set under the following conditions:
- DTC P0502 (output shaft speed sensor) is not present.
- VCM detects a closed TCC brake switch for 2 seconds and the following events occur 10-15 consecutive times:
- Vehicle speed is more than 20 MPH for 6 seconds.
- Then vehicle speed is 5-20 MPH for 4 seconds, then vehicle speed is less than 5 MPH.
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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.