One the the most common issues through a auto is a poor serpentine belt. If you suspect that her Cadillac DeVille has actually this problem, we’ll offer you the usual symptoms below, as well as how to change it.

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The an excellent news is the serpentine belts space cheap, and also in the grand system of things, fairly easy come replace. The sound that a poor serpentine belt renders is a squealing sound. It has a greater pitch 보다 an engine rattling.


Bad Serpentine Belt Symptoms: Cadillac DeVille

Here space the most common symptoms that a negative serpentine belt in the Cadillac DeVille:

Squealing Belt

Often, the first sign the a bad serpentine belt in her DeVille is squealing. The squealing should enhance the engine RPM. That is come say, that as soon as you rev the engine, the squeal alters pitch accordingly.

It might also go away totally if you rev her engine a few times. This happens due to the fact that the serpentine belt gets warmth in it and is able to grab ahold of the pulleys. In ~ this point it is no much longer slipping. It’s a matter of time before revving the engine no much longer corrects the problem.

A common Serpentine Belt

Visible Wear and also Cracking ~ above the Belt

As your serpentine belt ages, that will start to present visible indications of wear. This belts space not design to critical the life of one engine. A negative serpentine belt might have:

Glazing crack Smooth Surface lacking Pieces Uneven undertake Missing/Damaged Ribs

Any of these items are enough to replace the belt.

Engine Accessories not Working

The serpentine belt powers her engine accessories, such as the power steering pump and also air conditioning compressor. If this accessories space not working, that’s one indication that the serpentine belt is shoot or lacking entirely. Gain a brand-new belt immediately.


The serpentine belt is responsible for transforming the water pump in her DeVille. If the fails, water can no much longer circulate throughout the engine. You also shouldn’t have actually power steering (although some vehicles currently have electrical power steering so it is in careful).

If the belt is off all the way, or the engine is overheating, perform not drive it somewhere to have actually it looked at. Overheating the engine and blowing a head gasket will cost means more 보다 a brand-new serpentine belt.

Cadillac DeVille Serpentine Belt Replacement

Replacing a serpentine belt is a simple process. Your DeVille uses a tensioner to keep the serpentine belt tight.

The first thing you room going to should do is uncover the tensioner and apply pressure to that in order to loosen the serpentine belt. Once you’ve applied force you can pull the belt turn off of a pulley. Now, let turn off the tensioner slowly.

We recommend taking a snapshot of the belt route, and making sure that you have actually a diagram of the route prior to taking the belt off. The last point you desire is to not remember just how to gain the belt ago on. You need to see a sticker under your DeVille’s hood with serpentine belt course information.

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Here’s a good video native Scotty Kilmer on just how to readjust a serpentine belt:

Conclusion: negative Serpentine Belt Diagnosis – DeVille

Serpentine belt replacement is miscellaneous that any shade tree mechanic deserve to do with very few tools. Therefore if you have reason to believe that a bad serpentine belt is leading to your Cadillac DeVille’s engine to squeal, replacing it could be exactly what you must do.

If over there is anything that you would like to add, please leaving a comment below. Good luck!