For 1990-2009 cars

#### Symptom Diagnosis

Diagnostic Category | Diagnostic Information
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DEFINITION: This table consists of 9 diagnostic categories that are located in the left 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 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 Oil Pressure High or Low .

• | Refer to Fluid Leak Diagnosis .

• | Refer to Oil Out the Vent .

#### Noise and Vibration Diagnosis

This category contains the following topics:

• | Ratcheting noise

• | Noise: drive gear, final drive, whine, growl, rattle, buzz, popping

• | Vibration

• | Refer to Ratcheting Noise .

• | Refer to Ticking Noise in Reverse.

• | Refer to Vibration in Reverse and Whining Noise in Park .

• | Refer to Popping Noise .

• | Refer to Whine Noise Varying with RPM or Fluid Pressure .

• | Refer to Buzz Noise or High Frequency Rattle Sound .

• | Refer to Noise in Random Ranges .

#### Range Performance Diagnosis

This category contains the following topics:

• | Drives in Neutral

• | No Park

• | No Reverse

• | No Drive

• | No engine braking

• | Shift selector indicator does not match transmission gear range

• | Lack of power or hesitation

• | Refer to Drives in Neutral .

• | Refer to No Park .

• | Refer to No Reverse or Slips in Reverse .

• | Refer to No Drive in All Ranges .

• | Refer to No Drive in Drive Range .

• | Refer to No Overrun Braking - Manual 3-2-1 .

• | Refer to Range Selector Displays Incorrect Range .

• | Refer to Lack of Power or Hesitation .

#### Shift Quality (Feel) Diagnosis

This category contains the following topic:

• | Harsh, soft or slipping shifts

• | Harsh, soft or delayed engagement

• | Shift shudder, flare or tie-up

• | Refer to Harsh Shifts .

• | Refer to Slipping or Harsh 1-2 Shift .

• | Refer to No 2-3 Shift or 2-3 Shift Slips, Rough or Hunting .

• | Refer to No 3-4 Shift, Slips or Rough 3-4 Shift .

• | Refer to Harsh Garage Shift .

• | Refer to Delay in Drive and Reverse .

• | Refer to 3-2 Flare or Tie-Up .

#### Shift Pattern

This category contains the following topics:

• | One forward gear only

• | Two forward gears only

• | Gear missing or slipping

• | No upshift or slipping upshift

• | No downshifts

• | Non-First gear start

• | Refer to First Gear Range Only - No Upshift .

• | Refer to Third Gear Only .

• | Refer to Second/Third Gear Only or First/Fourth Gears Only .

• | Refer to Slips in First Gear .

• | Refer to Slipping or Harsh 1-2 Shift .

• | Refer to No 2-3 Shift or 2-3 Shift Slips, Rough or Hunting .

• | Refer to No 3-4 Shift, Slips or Rough 3-4 Shift .

• | Refer to No Part Throttle or Delayed Downshifts .

• | Refer to Second Gear Start .

#### Shift Speed Diagnosis

This category contains the following topic:

Inaccurate or inconsistent shift points

Refer to Inaccurate Shift Points .

#### Torque Converter Diagnosis

This category contains the following topics:

• | Torque converter diagnosis

• | TCC does not apply

• | TCC does not release

• | TCC apply/release quality

• | Refer to Torque Converter Diagnosis .

• | Refer to No Torque Converter Clutch Apply .

• | Refer to No Torque Converter Clutch Release .

• | Refer to Torque Converter Clutch Shudder .

#### Indicator On or Message Center Displays Message

This category contains the following topics:

Message Center displays "change trans fluid"

Refer to Transmission Component and System Description .

If symptom is not found |

• | Refer to Transmission Fluid Check .

• | Refer to Road Test .

• | Refer to Line Pressure Check .