Symptom Diagnosis. Cadillac Catera 1999

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 1999 🢒 Catera 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L30-E 🢒 Symptom Diagnosis

Symptom Diagnosis 1999 V Car 4L30-E

Diagnostic Category

Diagnostic Information

Important: The Functional Test Procedure should be performed before beginning any diagnosis. If this procedure has not already been performed, refer to Functional Test .

The following table consists of seven diagnostic categories that are located in the left-hand column of the table. 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 Line Pressure Check

•	Refer to Fluid Leak Diagnosis (procedure)

•	Refer to Automatic Transmission Overheating and Fluid Leaking from Ventilation

Noise and Vibration Diagnosis

This category contains the following topics:

•	Noise (drive gear, final drive, whine, growl, rattle, buzz, popping)

•

Vibration

•	Refer to Torque Converter Diagnosis

•	Refer to Rattling Noises in the Transmission

•	Refer to Vibration in Second Gear

•	Refer to Rattling in Torque Converter Clutch

Range Performance Diagnosis

This category contains the following topics:

•	Engine will not start

•	Drives in neutral

•

No park

•	No reverse

•

No drive

•	No engine braking

•	No or incorrect gear selection

•	Refer to Engine Will Not Start

•	Refer to Selector Position P Will Not Engage

•	Refer to Drives with Selector Lever in Position N

•	Refer to Rear Wheels Locked

•	Refer to No Reverse Gear

•	Refer to No Engine Braking

•	Refer to No Sport Program

•	Refer to No Winter Program

•	Refer to No Kickdown Program

Shift Quality (Feel) Diagnosis

This category contains the following topics:

•	Harsh engagement (garage shifts)

•	Delayed engagement (garage shifts)

•	Shift shudder

•	Refer to Coarse Shifting from N to D

•	Refer to Delay in Shifting from N to D

•	Refer to Slips or Shudders in First Gear

Shift Pattern

This category contains the following topics:

•	No upshifts

•	No downshifts

•

Slipping

•	Refer to Slips or Shudders in First Gear

•	Refer to No 1-2 Upshift

•	Refer to Difficulty in Shifting Between 1-2 Gear

•	Refer to No 2-3 Upshift

•	Refer to Difficulty in Shifting Between 2-3 Gear

•	Refer to No 3-4 Upshift

•	Refer to Difficulty in Shifting Between 3-4 Gear

•	Refer to No Downshift Possible

Shift Speed Diagnosis

This category currently has no information.

Currently no information

Torque Converter Diagnosis

This category contains the following topics:

•	Torque converter diagnosis

•	TCC does not apply

•	TCC does not release

•	Poor acceleration

•	Refer to Torque Converter Diagnosis

•	Refer to No Engagement of Torque Converter Clutch

•	Refer to Cannot Release Torque Converter Clutch

•	Refer to Rattling in Torque Converter Clutch

•	Refer to Poor Acceleration