General Motors — Fuel System Return to Normal Operation

A General Motors service procedure — check it applies to your exact model before use.

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Procedure

1. Return the fuel system to normal operating condition
2. Observe the Adaptive 1 fuel correction
3. Raise the engine speed to approximately 2500 rpm
4. Check if the Adaptive 1 fuel correction is within the specified range at idle and 2500 rpms

Source: manual:TIER3_4.3L_Generic_Service_Manual_RA.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.