GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Blazer - 4WD 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Base Engine Misfire with Abnormal Valve Train Noise

Cause

Correction

Worn, damaged or loose rocker arm
    • Inspect the valve rocker arms.
    • Repair or replace damaged components as required.

Worn, damaged, loose or bent valve push rod
    • Inspect the valve push rods.
    • Repair or replace damaged components as required.

Worn, damaged or stuck valve, carbon on the valve stem or valve seat
    • Inspect the valves.
    • Inspect the valve guides.
    • Repair or replace damaged components as required.

Worn, damaged or dirty valve lifter
    • Inspect the valve lifters.
    • Inspect the camshaft.
    • Repair or replace damaged components as required.

Worn or damaged camshaft lobe
    • Inspect the camshaft.
    • Inspect the valve lifters.
    • Repair or replace damaged components as required.

Worn, damaged or loose timing chain and sprockets
    • Inspect the timing chain and sprockets.
    • Repair or replace damaged components as required.