Symptom Diagnosis

WARNING: This page is about a different car, the 2002 Buick Regal, 2002 Buick Century, 2001 Buick Regal, and 2001 Buick Century. 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. If a listed symptom matches the customer's concern, check the applicable items for possible cause.

Fig 1: Automatic Transmission Fluid Leaks (1 Of 2)

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Fig 2: Automatic Transmission Fluid Leaks (2 Of 2)

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Fig 3: Incorrect Line Pressure

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Fig 4: Delayed Park To Reverse/Drive Engagement

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Fig 5: Harsh Park To Reverse/Drive Engagement

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Fig 6: Slips In Drive Or No Drive

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Fig 7: Slips In Reverse Or No Reverse

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Fig 8: Locked Up In Drive/Reverse

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Fig 9: No Park Range

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Fig 10: Harsh Or Soft 1-2 Shift Feel

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Fig 11: Harsh Or Soft 2-3/3-2 Shift Feel

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Fig 12: Harsh Or Soft 3-4/4-3 Shift Feel (1 Of 2)

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Fig 13: Harsh Or Soft 3-4/4-3 Shift Feel (2 Of 2)

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Fig 14: High Or Low Upshift Or Downshift Speed

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Fig 15: 1st & 2nd Gear Only (2-3 Solenoid Stuck On)

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Fig 16: 1st & Forth Gear Only (1-2 Solenoid Stuck On)

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Fig 17: 2nd & 3rd Gear Only (1-2 Solenoid Stuck Off)

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Fig 18: 3rd & 4th Gear Only (2-3 Solenoid Stuck Off)

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Fig 19: 1st Gear Only

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Fig 20: 2nd Gear Only

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Fig 21: 3rd Gear Only

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Fig 22: 4th Gear Only

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Fig 23: Slipping Or No 1st Gear

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Fig 24: Slipping Or No 2nd Gear

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Fig 25: Slipping Or No 3rd Gear

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Fig 26: Slipping Or No 4th Gear

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Fig 27: No Engine Braking In Manual 2nd Or Low Range

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Fig 28: Whine Noise Varying With RPM Or Fluid Pressure

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Fig 29: Popping Noise

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Fig 30: Buzz Noise Or High Frequency Rattle Sound

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Fig 31: Whine/Growl Noise That Changes With Vehicle Speed

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Fig 32: Final Drive Noise Or Hum Noise

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Fig 33: Noise In 1st, 2nd, 3rd Or 4th

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Fig 34: Noise In Random Ranges

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Fig 35: Abnormal Noise In Park Or Neutral

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Fig 36: TCC Stuck On In All Gears

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Fig 37: TCC Stuck On In 2nd, 3rd & 4th Gear

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Fig 38: Harsh TCC Apply Or Release

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Fig 39: TCC Apply Rough, Slips Or Shudders

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Fig 40: No TCC Apply

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