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 MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 246 (BODY CONTROL MODULES)DIAGNOSTIC TESTSDTC C1245: LOW TIRE PRESSURETEST PROCEDURE
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Test Procedure
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Test Procedure
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
- If diagnostic system check for TPM system has been performed, go to next step. If diagnostic system check for TPM system has not been performed, perform diagnostic system check. See TIRE PRESSURING MONITORING DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM.
- Ensure tires are properly inflated. Reset TPM system. See TIRE PRESSURE MONITORING RESET under PROGRAMMING.
- Using scan tool, clear DTC C1245. Operate vehicle under code enable criteria conditions. See CODE ENABLE CRITERIA . If DTC resets, repeat test beginning at step 1.
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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.