GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

DEFINITION: A popping noise similar to popcorn popping

Oil Pump System

    â€¢ Pump cavitation, indicated by bubbles on the fluid level indicator
    â€¢ Leak in the seam of the transmission fluid strainer
    â€¢ Cut seal or improper positioning of the transmission fluid strainer