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 MANUALSCADILLAC2013ATS 2.0L ENG VIN X, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISDATA COMMUNICATION SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC U0029: MOST BUSCIRCUIT/SYSTEM VERIFICATION
2013 Cadillac ATS 2.0L Eng VIN X, AWD
Circuit/System Verification
2013 Cadillac ATS 2.0L Eng VIN X, AWDSECTION Circuit/System Verification
- Ignition ON. Radio ON.
- Verify DTC U0028 is set.
- If the DTC is set
Refer to DTC U0028 .
- If the DTC is not set
- If the DTC is set
- Verify DTC U0029 is not set with symptom byte 02.
- If DTC U0029 is set with symptom byte 02
Refer to DTC U2098 .
- If DTC U0029 is set with other symptom bytes except 02
- If DTC U0029 is set with symptom byte 02
- Refer to Testing for Intermittent Conditions and Poor Connections to test for an intermittent condition.
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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.