Secondary Fluid Pump Noise (M33 Only)

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Checks	Causes
Inspect transmission fluid level. Refer to Transmission Fluid Checking Procedure . 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.