Low Lubrication Pressure

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

Condition	Action
Incorrect fluid level	Correct the fluid level. Refer to Transmission Fluid Checking Procedure .
Plugged suction filter	Clean or replace the oil suction filter. Refer to Oil Pan Replacement .
Plugged cooler circuit filter	Replace the filter.
Excessive internal fluid leakage	Inspect other pressures. Refer to Low Main Line Pressure in All Ranges and Low Main Line Pressure in specific Ranges, Normal Pressure in Other Ranges . Inspect the control module mounting bolts. Inspect the lubrication valve and spring. Inspect the converter housing to separator plate gasket.
Cooler lines restricted or leaking	Inspect for kinks and leakage. Reroute or replace lines as necessary.
Lubrication regulator valve sticking	Clean or replace the regulator valve.
Converter relief valve sticking	Clean or replace the converter relief valve.
Cooler plugged	Clean or replace the cooler.
Faulty gauge	Repair or replace the gauge.