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 MANUALSCHEVROLET2003C TAHOE 2WD V8-5.3L VIN TREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTRANSMISSION CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL DATA VALUES & DATA LIST4L60-E/4L65-E AUTOMATIC TRANSMISSION
2003 Chevrolet C Tahoe 2WD V8-5.3L VIN T
4L60-E/4L65-E Automatic Transmission
2003 Chevrolet C Tahoe 2WD V8-5.3L VIN TSECTION 4L60-E/4L65-E Automatic Transmission
Transmission Scan Tool Data List
Use the scan tool data list under the following conditions:
* The Diagnostic System Check - Automatic Transmission is complete. Initial Inspection and Diagnostic Overview
* The on-board diagnostics are functioning properly.
* No DTCs are present.
The values below represent a typical display recorded from a properly functioning system.
Important: Do not use a scan tool that displays faulty data. Report the condition to the scan tool manufacturer. The use of a faulty scan tool can result in misdiagnosis and the unnecessary replacement of parts.
Only the parameters listed below are used for diagnosing. If a scan tool displays other parameters, the values are not recommended for use in diagnosis.
Scan tool values below were recorded under the following conditions:
* Engine at idle
* Upper radiator hose hot
* Closed throttle
* Transmission in PARK
* Closed Loop operation
* Accessories OFF
* Brake pedal not applied
Transmission Scan Tool Data List
Use the scan tool data list under the following conditions:
* The Diagnostic System Check - Automatic Transmission is complete. Initial Inspection and Diagnostic Overview
* The on-board diagnostics are functioning properly.
* No DTCs are present.
The values below represent a typical display recorded from a properly functioning system.
Important: Do not use a scan tool that displays faulty data. Report the condition to the scan tool manufacturer. The use of a faulty scan tool can result in misdiagnosis and the unnecessary replacement of parts.
Only the parameters listed below are used for diagnosing. If a scan tool displays other parameters, the values are not recommended for use in diagnosis.
Scan tool values below were recorded under the following conditions:
* Engine at idle
* Upper radiator hose hot
* Closed throttle
* Transmission in PARK
* Closed Loop operation
* Accessories OFF
* Brake pedal not applied
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Transmission Scan Tool Data List
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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.