Popping Noise. GMC Truck Sierra

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E/4L70-E 🢒 Popping Noise

Checks

Action

DEFINITION: A popping noise, similar to popcorn popping

Oil Pump System

•	Check fluid level.

•	Inspect for pump cavitation, indicated by bubbles in fluid.

•	Inspect the transmission fluid filter for a leaky seam.

•	Inspect the transmission fluid filter seal for improper positioning or for a cut seal.