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 MANUALSGMC2022SIERRA 1500 SLT, 6.2L ENG VIN LREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISDATA COMMUNICATIONS - DIAGNOSTIC INFORMATION AND PROCEDURES (1 OF 3)DIAGNOSTIC INFORMATION AND PROCEDURESDTC U1008 (K73 TELEMATIC CONTROL MODULE)CIRCUIT/SYSTEM VERIFICATION
2022 GMC Sierra 1500 SLT, 6.2L Eng VIN L
Circuit/System Verification
2022 GMC Sierra 1500 SLT, 6.2L Eng VIN LSECTION Circuit/System Verification
- Ignition ON/Vehicle In Service Mode.
- Verify that DTC U0073 - U007E, DTC U0100 - U02FF, DTC U1100 - U12FF, DTC U1600 - U17FF, DTC U2200 - U23FF, or DTC U2400 - U25FF is not set.
- If any of the DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If none of the DTCs are set
- If any of the DTCs are set
- Refer to Circuit/System Testing.
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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.