Q: When I start my 2005 Cadillac CTS there's a loud screeching noise then it goes away

asked by on

I only hear the noise when I turn the key to start car. There's a loud screeching noise that fades away immediately once car running

My car has 175000 miles.
My car has an automatic transmission.

There are a few possible causes for a squeal when the vehicle is first started. Typically, this is a sign that there is a worn belt, a worn tensioner, or a pulley that is either worn or out of alignment. It will be necessary to do an inspection to verify what the actual cause of the noise is. Most of the time, this problem will present itself upon first start (when cold) and go away as the engine runs for a few minutes. Over time, if not remedied, the noise will become constant, and the likelihood of the part failing completely increases exponentially. If you take a look at the belt, look for cracks on either side, as a sign that the belt is due for replacement. If this is something you feel you could use a hand to identify and/or repair, consult a certified mechanic, like those available at YourMechanic.com.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. When I start my 2005 Cadillac CTS there's a loud screeching noise then it goes away

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Squealing noise coming from the rear right side

Hey there. You could simply need a brake pad replacement, or there may be some hardware in the brake that is not sitting exactly where is should and makes a noise as soon as the disk starts to turn. Disk...

Q: Code P02A9 Cylinder 4 Balance-Fuel Trim at Limit

The code definition specifically indicates the number four fuel injector is leaking. Fuel trims are used to indicate how much the PCM (powertrain control module) needs to adjust the fuel duty cycle to maintain the proper air fuel ratio. Duty...

Q: Do I need to install a sway bar link kit with a lift kit on my 2014 Jeep Wrangler

Hello. If you are adding a lift kit to your Jeep you will need to install longer sway bar link pins. This is because the distance from the suspension to the sway bar will change. If you do not then...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...