K 2500 Suburban 4WD V8-6.0L VIN U (2001)
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The voltage supply circuits
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DO NOT disturb the tool harnesses while programming. If an interruption occurs during the programming procedure, programming failure or
control module damage may occur.
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If you are performing the pass-through programming procedure using a notebook computer without the power cord, ensure the internal battery is
fully charged.
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 re-learn certain values. The control module must re-learn the following after a software/calibration update:
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Fuel trim correction
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Idle air control learned position
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Automatic transmission shift adapts
Other learned values only re-learn by doing a service procedure.
If a control module is replaced the following service procedures must be performed:
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The crankshaft variation learn procedure if applicable.
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The Engine Oil Lite Reset Procedure, if applicable
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The Idle Learn Procedure, if applicable
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The Inspection/Maintenance Complete System Set Procedure
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The Vehicle Theft Deterrent Password Learn Procedure, if applicable
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The TP sensor learn procedure, if applicable
The Throttle Actuator Control (TAC) system uses vehicle electronics and components to calculate and control the position of the throttle blade. This
eliminates the need for a mechanical cable attachment from the accelerator pedal to the throttle body. This system also performs the cruise control
functions.
The TAC system include, but are not limited to, the following components:
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The Accelerator Pedal Position (APP) sensor
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The throttle body
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The throttle actuator control (TAC) module
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The Powertrain Control Module (PCM) These components interface to ensure accurate calculations and control of the throttle position.
