Symptom Diagnosis

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Perform PRELIMINARY INSPECTION prior to diagnosing by symptom.

NOTE: Use the following symptoms to aid in preliminary diagnosis. See Fig 1-Fig 20 . If a listed symptom matches the customer's concern, check the applicable items for possible cause.

Fig 1: Excessive Slippage & Clutch Chatter

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Fig 2: Fluid Leaks From Fluid Fill Tube & Vent

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Fig 3: Fluid Leaks From Transmission Input

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Fig 4: Fluid Leaks From Transmission Output

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Fig 5: Intermittent Buzzing Noise

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Fig 6: Low Main Line Pressure In All Gear Ranges (1 Of 2)

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Fig 7: Low Main Line Pressure In All Gear Ranges (2 Of 2)

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Fig 8: Low Main Line Pressure In Specific Gear Ranges, Normal In All Other Gear Ranges

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Fig 9: Low Lubrication Pressure

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Fig 10: Contaminated Transmission Fluid

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Fig 11: Excessive Flare - Engine Overspeed On Wide-Open Throttle (1 Of 2)

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Fig 12: Excessive Flare - Engine Overspeed On Wide-Open Throttle (2 Of 2)

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Fig 13: High Stall Speeds (Stall In Ranges 1-5)

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Fig 14: Low Stall Speeds (Stall In Ranges 1-5)

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Fig 15: Transmission Will Not Make A Specific Shift

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Fig 16: Transmission Will Not Stay In Forward Or Reverse

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Fig 17: Transmission Will Not Shift To Forward Or Reverse

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Fig 18: Transmission Overheats

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Fig 19: Transmission Does Not Shift Properly

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Fig 20: Abnormal Activities Or Responses

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