For 1990-2009 cars

#### Symptom Diagnosis (2000 U-van 4T65-E)

Diagnostic Category | Diagnostic Information
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This table consists of seven diagnostic categories that are located in the left-hand column. Using this column, choose the appropriate category based on the operating conditions of the vehicle or transmission. After selecting a category, use the right-hand column to locate the specific symptom diagnostic information.

#### Fluid Diagnosis

This category contains the following topics:

• | Fluid condition (appearance, contaminants, smell, overheating)

• | Line pressure (high or low)

• | Fluid leaks

• | Refer to Transmission Fluid Check .

• | Refer to Incorrect Line Pressure .

• | Refer to Transmission Component Fluid Leak Diagnosis .

• | Refer to Fluid Leak Diagnosis .

#### Noise and Vibration Diagnosis

This category contains the following topic:

• | Torque converter diagnosis

• | Noise and vibration analysis

• | Refer to Torque Converter Diagnosis .

• | Refer to Noise and Vibration Analysis .

#### Range Performance Diagnosis

This category contains the following topics:

• | No Park

• | No Reverse or slips

• | No Drive or slips

• | No engine braking

• | Shift position indicator does not match range selector position

• | Refer to No Park Range .

• | Refer to Slips in Reverse or No Reverse .

• | Refer to Slips in Drive or No Drive .

• | Refer to Locked Up in Drive/Reverse .

• | Refer to No Engine Braking in Manual Second or Low Range .

• | Refer to Transmission Range Switch Circuit Electrical .

#### Shift Quality (Feel) Diagnosis

This category contains the following topics:

• | Harsh shifts

• | Soft shifts

• | Harsh engagement (garage shifts)

• | Delayed engagement (garage shifts)

• | Refer to Harsh or Soft 1-2 Shift Feel .

• | Refer to Harsh or Soft 2-3/3-2 Shift Feel .

• | Refer to Harsh or Soft 3-4/4-3 Shift Feel .

• | Refer to Harsh Park to Reverse/Drive Engagement .

• | Refer to Delayed Park to Reverse/Drive Engagement .

#### Shift Pattern

This category contains the following topics:

• | No upshift

• | Slipping or missing gears

• | One forward gear only

• | Two forward gears only

• | Non-First gear start

• | Refer to Slipping or No First Gear .

• | Refer to Slipping or No Second Gear .

• | Refer to Slipping or No Third Gear .

• | Refer to Slipping or No Fourth Gear .

• | Refer to First Gear Only .

• | Refer to Second Gear Only .

• | Refer to Third Gear Only .

• | Refer to Fourth Gear Only .

• | Refer to First and Second Gear Only - 2-3 Solenoid Stuck On .

• | Refer to First and Fourth Gear Only - 1-2 Solenoid Stuck On .

• | Refer to Second and Third Gear Only (1-2 Solenoid Stuck Off) .

• | Refer to Third and Fourth Gear Only (2-3 Solenoid Stuck Off) .

#### Shift Speed Diagnosis

This category contains the following topic:

Incorrect shift points

Refer to High or Low Upshift or Downshift Speed .

#### Torque Converter Diagnosis

This category contains the following topics:

• | Torque converter diagnosis

• | TCC does not apply

• | TCC does not release

• | TCC shudder

• | Refer to Torque Converter Diagnosis .

• | Refer to No Torque Converter Clutch Apply .

• | Refer to Converter Clutch Stuck On in All Gears .

• | Refer to Converter Clutch Stuck On in Second, Third and Fourth Gear .

• | Refer to Harsh Torque Converter Clutch Apply or Release .

• | Refer to Converter Clutch Apply Rough, Slips, or Shudders .

#### Symptom Can Not Be Duplicated or Symptom Not Found

This category contains the following topics:

• | Transmission fluid diagnosis

• | Road testing

• | Line pressure diagnosis

• | Refer to Transmission Fluid Check .

• | Refer to Road Test .

• | Refer to Line Pressure Check .