After Programming a Control Module

The powertrain may operate slightly different after a control module software/calibration update. Operating the powertrain through various driving conditions allows the control module to relearn certain values. The control module must relearn the following after a software/calibration update:

• Fuel trim correction
• Idle air control (IAC) learned position
• Automatic transmission shift adapts

Other learned values only relearn by performing a service procedure.

If a control module is replaced the following service procedures may need to be performed:

• The crankshaft variation learn procedure
• The engine oil life reset procedure
• The idle learn procedure
• The inspection/maintenance complete system set procedure
• The vehicle theft deterrent password learn procedure
• The throttle position (TP) sensor learn procedure