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Question
QUESTION: i turned my 2002 cadillac sts on and i hear a squealing noise why is that?
ANSWER: Hello,
Obviously I am not there to hear it, but my first thought on a squeal coming from the engine would be a loose or worn serpentine drive belt.
The belt should be check periodoticly because it controls every thing from your water pump to alternator.
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---------- FOLLOW-UP ----------
QUESTION: my 2002 caddy sts drives good but i keep hearing rattling noise every time i go over bumps what does that mean/ DO I NEED NEW SHOCKS?
Hello,
Although I was very good at finding rattles and squeaks, it required road testing which I can not do hear. Rattle sounds travel as well. You may think the rattle is coming from the right rear when in fact it is coming from the front.
I don't want you to waste your money replacing shocks and find out that was not the problem.
There are guys as good as me when it comes to this.
Go to a local body shop and pay them to test drive. I am sure they can diagnose it the first time saving you money and frustration.
Good luck!
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Rob Painter
Expertise
Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?
Experience
Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.
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