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 MANUALSCHEVROLET2003CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 6.0 UREPAIR AND DIAGNOSIS (SINGLE PAGE)DRIVELINES & AXLESDIFFERENTIALS & DRIVE AXLESVIBRATION - DRIVETRAINDIAGNOSTIC STARTING POINTVIBRATION DIAGNOSIS & CORRECTIONNOTES
2003 Chevrolet Chevy Express G2500, Van Cargo Extended, 6.0 U
Vibration Diagnosis & Correction: Notes
2003 Chevrolet Chevy Express G2500, Van Cargo Extended, 6.0 USECTION Notes
NOTE:
The following steps must be completed before using the analysis tables or the symptom tables.
- See VIBRATION ANALYSIS - ROAD TESTING before using the other Vibration Analysis tables or the Symptom tables in order to effectively diagnose the customer's concern. The use of Vibration Analysis and Road Testing will first provide duplication of virtually any vibration concern and then identify the correct procedure for diagnosing the area of concern which has been duplicated.
- Review the following Vibration Diagnostic Process.
- Review the general descriptions to familiarize yourself with vibration theory and terminology, the Electronic Vibration Analyzer (EVA) 2 (J-38792-A), and the Vibrate Software (J-38792-VS). Reviewing this information will help you determine whether the condition described by the customer is a potential operating characteristic or not. Refer to the following:
- See VIBRATION THEORY & TERMINOLOGY under DESCRIPTION & OPERATION.
- See ELECTRONIC VIBRATION ANALYZER (EVA) under DESCRIPTION & OPERATION.
- See VIBRATE SOFTWARE under DESCRIPTION & OPERATION.
- See REED TACHOMETER under DESCRIPTION & OPERATION.
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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.