Question about 2005 Chevrolet Silverado
I own the exact same vehicle,and have the same symptoms.It is a design flaw by Chevrolet,but I have found a cheap solution that works well...get some cheap sidewalk chalk,rub the stick on the belt,it will instantly silence the squealing.While not a "permanent" fix, it is fast and easy,hope this helps you.
Posted on Dec 28, 2010
Harmonic balancer / main pulley is the only item you did not address.
Start the truck and inspect all pulleys for off balance movement.
The harmonic balancer pulley / main pulley is the lowest one on the pulley system.
The squawl nosie is cause by burn rubber the stuck on the pulley(s). You have to take your time and clean each pulleys for burn/melted rubber.
CLEAN ALL OF THEM
Are you ran addition electrical load like amps and large audio system?
Additional power load can cause alternator to generate more heat.
Turn on all electrical items and listen for noise from your alternator pulley.
Did you purge the air pocket out of the cooling system?
Filling the cooling system too fast can leave an air pocket.
Not a likely cause of noise but it good to make sure the cooling system is top off correctly when it's cold.
The tensioner pulley is manufacture at south of the boarder and I had a lot of return on this part.
Turn the bolt on the pulley and make sure it's provide a smooth swing movement.
Please do a good cleaning job on all pulley and inspect for off balance movement on all pulleys.
You may email me for follow up question.
Posted on Jul 17, 2010
I have had a similiar issue on my Grand Prix sqealing every 500 to 1000 miles. I went through about 4 belts until I got fed up with the dealer putting on the same belt again and again every 500-1000.I was under warranty at the time and decided to handle it my way.At the time the vehicle had roughly 5000 miles on it.My solution I special ordered the Goodyear Gatorback for the supercharger and the for the main drive belt.Now at 30000 miles still have not heard a peep out of the belt. The Gatorback is one the best belts available. I purchased mine through an Autozone.The belts will widen slightly do to wear and stretching. Before trying anything else.I highly suggest trying first we have resolved this problem at the dealership this way.
Posted on Jul 17, 2010
Have you checked for a foreign object stuck in the pulley groves? A tiny rock will cause the belt to fail over time. The tensioner could of course be too strong but you replaced it with a new one so that would not appear to be the problem. You also replaced the alternator but was it a rebuilt alternator? If so, look at the pulley very closely. Make sure the alternator is aligned perfectly with the other pulleys. One of the pulleys is more than likely out of alignment or it is damaged. This is especially common on plastic pulleys. Is the tensioner pulley hitting the belt dead center? If not shim it or remove a washer to align it. The only other thing I can think of is that when you replace parts you left a washer off one of them. This would cause them to be out of alignment.
Posted on Jul 13, 2010
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Posted on Jan 02, 2017
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