GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
1996
🢒
Cavalier
🢒
Transmission/Transaxle
🢒
Automatic Transaxle - 3T40
🢒 Whine Noise Varying with RPM or Fluid Pressure
Checks
Cause
Additionally, a popping noise similar to popcorn popping
Oil Pump System
•
Verify that the noise is internal to the oil pump during a preliminary oil pressure check. An increase in line pressure will vary an oil pump noise
•
Pump cavitation is indicated by bubbles on the fluid level indicator
•
Check the transmission fluid strainer for a filter seam leak
•
Check the transmission fluid strainer seal for proper positioning or for a cut seal