Secondary Fluid Pump Noise. GMC Truck Sierra Classic

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E/4L70-E 🢒 Secondary Fluid Pump Noise

Secondary Fluid Pump Noise M33 Only

Checks

Causes

•	Inspect transmission fluid level. Refer to Transmission Fluid Check .

•	Transmission bottom pan damage.

Incorrect fluid level.

•	Secondary Fluid Pump contracting oil pan due to damage.

•	Secondary Fluid Pump is loose.

•	Secondary Fluid Pump overheating.

•	Pump motor high current draw.

•	High transmission fluid temperatures.

Secondary Fluid Pump.