Symptom Diagnosis

WARNING: This page does not describe the selected car, but rather 36 other vehicles, including the 2002 Pontiac Firebird, 2002 Oldsmobile Bravada, 2002 GMC Yukon XL, 2002 GMC Yukon, and 2002 GMC Sonoma. 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: Transmission Overheats

G00095856

Courtesy of GENERAL MOTORS CORP.

Fig 2: Oil Pressure High Or Low

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Fig 3: Harsh Shifts

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Fig 4: Inaccurate Shift Points

G00095819

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Fig 5: 1st Gear Only - No Upshift

G00095820

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Fig 6: Slips In 1st Gear (1 Of 2)

G00095821

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Fig 7: Slips In 1st Gear (2 Of 2)

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Fig 8: Slipping Or Harsh 1-2 Shift

G00095823

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Fig 9: No 2-3 Shift Or 2-3 Shift Slips, Rough Or Hunting

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Fig 10: 2nd/3rd Gears Only Or 1st/4th Gears Only

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Fig 11: No 1st Or 2nd Gear, Or No 3rd Or 4th Gear

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Fig 12: No 2nd Gear, No 4th Gear & No Reverse Gear

G00095827

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Fig 13: 3rd Gear Only

G00095828

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Fig 14: 3-2 Flare Or Tie-Up

G00095829

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Fig 15: No 3-4 Shift, Slips Or Rough 3-4 Shift

G00095830

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Fig 16: No Reverse Or Slips In Reverse

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Fig 17: No Part Throttle Or Delayed Downshifts

G00095832

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Fig 18: Harsh Garage Shift

G00095833

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Fig 19: No Overrun Braking In Manual 3-2-1

G00095834

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Fig 20: No TCC Apply (300 RPM Slip)

G00095835

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Fig 21: TCC Shudder

G00095836

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Fig 22: No TCC Release

G00095837

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Fig 23: TCC Slip (100 RPM Slip)

G00095838

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Fig 24: TCC Slip With Stall/Stumble

G00095839

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Fig 25: TCC Intermittent (Okay Cold/Slips Hot)

G00095840

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Fig 26: No 4th Gear Or Slips In 4th Gear

G00095841

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Fig 27: Slip Or Flare In Any Gear

G00095842

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Fig 28: No 3rd Gear

G00095843

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Fig 29: Drives In Neutral

G00095844

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Fig 30: 2nd Gear Start

G00095845

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Fig 31: No Park

G00095848

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Fig 32: Oil Out Vent

G00095846

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Fig 33: Vibration In Reverse & Whining Noise In Park

G00095847

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Fig 34: Ratcheting Noise

G00095849

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Fig 35: No Drive In All Ranges

G00095850

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Fig 36: No Drive In "D" Range

G00095851

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Fig 37: Gearshift Lever Indicates Wrong Gear

G00095852

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Fig 38: No Gear Selection

G00095853

Courtesy of GENERAL MOTORS CORP.

Fig 39: Engine Starts In Gear

G00095854

Courtesy of GENERAL MOTORS CORP.

Fig 40: Delay In Drive & Reverse

G00095855

Courtesy of GENERAL MOTORS CORP.