GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Terrain 🢒 Engine 🢒 Engine Mechanical - 2.8L, 3.2L, or 3.6L 🢒 Upper Engine Noise, Regardless of Engine Speed

Cause

Correction

Low oil pressure
    • Verify oil pressure. Refer to Oil Pressure Diagnosis and Testing
    • Repair or replace damaged components as required.

Improper lubrication of the valve train components
    • Verify oil pressure. Refer to Oil Pressure Diagnosis and Testing .
    • Inspect the valve lifters.
    • Inspect the oil filter bypass valve.
    • Inspect the oil pump and pump screen.
    • Inspect the engine block oil galleries.
    • Repair or replace damaged components as required.

Broken valve spring
    • Inspect the valve springs.
    • Repair or replace damaged components as required.

Worn, damaged or stuck valves, carbon on the valve stem or valve seat

    • Inspect the valves.
    • Inspect the valve guides.
    • Repair or replace damaged components as required.

Worn or damaged valve guide
    • Inspect the valve guides.
    • Inspect the valves.
    • Repair or replace damaged components as required.

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

Worn or damaged camshaft lobes

    • Inspect the engine camshaft lobes.
    • Repair or replace damaged components as required.

Worn, damaged, improperly installed or loose timing chain and sprockets

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

Worn, damaged or improperly installed chain belt tensioner, if equipped
    • Inspect the timing chain tensioner.
    • Repair or replace damaged components as required.