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 MANUALSCHEVROLET1999LUMINA V6-3.8L VIN KREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETESTING AND INSPECTIONCLEARING DIAGNOSTIC TROUBLE CODESWITH DIAGNOSTIC SCAN TOOL
1999 Chevrolet Lumina V6-3.8L VIN K
With Diagnostic Scan Tool
1999 Chevrolet Lumina V6-3.8L VIN KSECTION With Diagnostic Scan Tool
PROCEDURE
Use a Tech II or equivalent Scan tool to clear Diagnostic Trouble Codes (DTCs) from the PCM memory. When clearing DTCs, follow the instructions supplied by the Scan tool manufacturer.
NOTES:
^ Do not clear the DTCs unless directed to do so by the service information provided for each diagnostic procedure. All of the diagnostic data that was saved along with the DTC (freeze frame data and/or malfunction history records) which may be helpful for some diagnostic procedures will be erased from the memory when the DTCs are cleared.
^ Interrupting PCM battery voltage to clear DTCs is NOT recommended.
Use a Tech II or equivalent Scan tool to clear Diagnostic Trouble Codes (DTCs) from the PCM memory. When clearing DTCs, follow the instructions supplied by the Scan tool manufacturer.
NOTES:
^ Do not clear the DTCs unless directed to do so by the service information provided for each diagnostic procedure. All of the diagnostic data that was saved along with the DTC (freeze frame data and/or malfunction history records) which may be helpful for some diagnostic procedures will be erased from the memory when the DTCs are cleared.
^ Interrupting PCM battery voltage to clear DTCs is NOT recommended.
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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.