K 1500 Suburban 4WD V8-5.3L VIN Z Flex Fuel (2003)
Ensure that the following conditions are met before programming a control module:
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Vehicle system voltage:
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There are no charging system concerns. All charging system concerns must be repaired before programming a control module.
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The battery voltage is greater than 12 volts but less than 16 volts. The battery must be fully charged before programming the control module.
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A battery charger is NOT connected to the vehicles battery. Incorrect system voltage or voltage fluctuations from a battery charger may cause
programming failure or control module damage.
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Turn OFF or disable any system that may put a load on the vehicles battery. Turn OFF or disable systems such as:
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Daytime running lights (DRL). Applying the parking brake, on most vehicles, disables the DRL system.
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Heating, ventilation, and air conditioning (HVAC) systems
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Engine cooling fans, etc.
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The ignition switch is in the proper position.
The scan tool prompts you to turn ON the ignition, with the engine OFF. DO NOT change the position of the ignition switch during the
programming procedure unless instructed to do so.
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All tool connections are secure:
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The RS-232 cable
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The connection at the DLC
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The voltage supply circuits
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The OBPA
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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 that 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 (IAC) learned position
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Automatic transmission shift adapts
Other learned values only re-learn by performing a service procedure.
If a control module is replaced the following service procedures may need to be performed:
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The crankshaft variation learn procedure
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The engine oil life reset procedure
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The idle learn procedure
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The inspection/maintenance complete system set procedure
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The vehicle theft deterrent password learn procedure
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The throttle position (TP) sensor learn procedure.
Remote Programming
Service Programming System (SPS) Remote Procedure
The Remote SPS method is a three-step process that involves the following procedures:
I.
Connecting the Tech 2 to the vehicle and obtaining the information from the module.
II.
Connecting the Tech 2 to the terminal and downloading a new calibration file from the terminal into the Tech 2 memory.
III. Reconnecting the Tech 2 to the vehicle and uploading the new calibration file into the module.
Performing the Remote Procedure
1. Connect the Tech 2 to the vehicle and obtain the module information using the following procedure:
Important:
Ensure the control module is installed in the vehicle and the battery is fully charged before programming.
