GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Chevy C Cab/Chassis HD (GMT 400) 🢒 Engine 🢒 Engine Mechanical - 6.5L 🢒 Engine Noise on Start-Up, but Only Lasting a Few Seconds

Cause

Correction

Incorrect oil filter without anti-drainback feature

Install the correct oil filter.

Incorrect oil viscosity
    • Drain the oil.
    • Install the correct viscosity oil.

High valve lifter leak down rate

Replace the lifters as required.

Worn crankshaft thrust bearing
    • Check the crankshaft endplay.
    • Inspect the thrust bearing and crankshaft.
    • Repair or replace as required.

Damaged or faulty oil filter by-pass valve
    • Inspect the oil filter by-pass valve for proper operation.
    • Repair or replace as required.