Engine Noise Under Load. Cadillac CTS 2005

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2005 🢒 CTS 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Engine Noise Under Load

Cause

Correction

Low oil pressure

•	Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing .

•	Repair or replace as required.

Detonation or spark knock

Verify the correct operation of the ignition controls. Refer to Detonation/Spark Knock in Engine Controls - 5.7L.

Excessive connecting rod bearing clearance

Inspect the following components, and repair as required:

•	The connecting rod bearings

•	The connecting rods

•	The crankshaft

Excessive crankshaft bearing clearance

Inspect the following components, and repair as required:

•	The crankshaft bearings

•	The crankshaft journals

•	The cylinder block crankshaft bearing bore