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Chirping or ticking sound when accelerating

Boogie327

Full Member
Joined
Aug 26, 2020
Messages
69
So I have a 2004 Z71 with a little over 200K. I am experiencing an issue only when I accelerate. It makes this chirping sound from what I am guessing around the front right almost like it's under the passenger door. I can not reproduce the sound when the car is park or neutral. It only happens when giving gas.

Here is a link to the sound

 
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Exhaust leak? Is you catalytic converter plugged up?
I tried checking for a exhaust leaks using the reverse vacuum in the tail pipe. Thats how I found the exhaust manifold leaks. (I fixed those..PITA) But will give it another look. I was also thinking about the catalytic since the sound was in that area. Is there a way to check without taking it to a muffler shop?
Thanks
 
Sounds to me like a pulley on a belt tensioner. That's how mine first started out until it got so bad it seized and melted/tore the belt.
 
A/C belt tensioner pulley, had one go bad on the suburban and took me a week to find it, sounded like a cam bearing going but could not hear it with the stethoscope on the engine but could hear it well in the cab, cut the A/C belt and gone.
 
I tried checking for a exhaust leaks using the reverse vacuum in the tail pipe. Thats how I found the exhaust manifold leaks. (I fixed those..PITA) But will give it another look. I was also thinking about the catalytic since the sound was in that area. Is there a way to check without taking it to a muffler shop?
Thanks
I would get my wife to run the gas while I crawled under and listened.
 
A/C belt tensioner pulley, had one go bad on the suburban and took me a week to find it, sounded like a cam bearing going but could not hear it with the stethoscope on the engine but could hear it well in the cab, cut the A/C belt and gone.
Yep - that's exactly what mine was. I knew it was the tensioner after snooping around - I just procrastinated a bit too long.

There are two tensioners. There is one for the AC belt and one for the master serpentine belt. Luckily mine, like yours, was just the AC so it didn't leave me stranded.
 
Yep - that's exactly what mine was. I knew it was the tensioner after snooping around - I just procrastinated a bit too long.

There are two tensioners. There is one for the AC belt and one for the master serpentine belt. Luckily mine, like yours, was just the AC so it didn't leave me stranded.
I just changed the AC tensioner the other day hoping it was the cause but no dice. I will check the one for the serpentine next along with wheel bearings and ball joints.
Thanks
 
Ok so here is the update..I checked and replaced some of the more affordable items but it's still making that sound. I still need to check the converter. Anything else I should look at?
Thanks
 
:woot:I got some great new. That darn chirping ticking noise has now been resolved. The issue was my aftermarket Wicked Flow exhaust. Took it to a reputable muffler shop and had him ride with me to show him the sound. Then instantly he said it was the exhaust. Got it up on the lift and he tapped on the muffler and sure enough it was hollowed out. So got it replaced with a 409 muffler and that sound is gone!
Thanks everyone for helping out. Hope this helps someone else.
 
Wow, I never would have thought of that. I'm glad you figured it out. (y)
 
I had (still have? I donno) a chirping sound off idle and warmed up. I removed the A/C belt, still there, I replaced the following and it was still there, serpentine belt tensioner, belt idler, in other words all that could produce that sound. Then I remembered I had some PRETTY dirty power steering fluid that I had sucked out and replaced several times, maybe it's the pump. Changing that pump is a huge PIA.
I had to remove that large aluminum bracket that holds the alternator and the pump to get at the pressure line on the pump. Because the all the books and pump rebuilders said hoses over 5 years old should be replaced I replaced them. Now my truck has the hydro-boost brakes that tie in with the power steering pump so there are 2 hoses to the hydro-boost and a return line, there is a hose to the reciculating ball steering gear box and there is a hose to a power steering fluid cooler. There are return lines on the hydro-boost and the cooler. So They pupm people want you to flush the power steering system. a job that takes 2 people. The hydro-boost returns fluid after the pedal is depressed and released, the fluid comes out when the pedal returns to the non-applied position. The gear box has return fluid under some pressure, this is where you need some one to hold the hose in a bucket or you'll have fluid all over. When you replace the return lines don't buy the part numbered reurn lines, just get the same rated hose from bulk supplies and save a ton of $$, the P/N hoses have bends in the end(s), I saw some plastic pieces that you lay your hose on to and it bends the hose, just install some wire ties and your good to go. I still have a little noise at idle, I think it might be the belt. BTW I replaced the water pump in June of this year, and the alternator was replaced last year. Any Ideas?
 
You mentioned the idler/belt tensioner. There are two, one for the ac belt and one for the main drive. Did you replace both? If so, get yourself a stethoscope and listen on various components.

There's another post around here from not too long ago that had a similar issue. It's only a month or two old (I think).
 
I replaced the p/s pump on my EXT last fall.

A royal pain, to be sure.

I hope you installed an ACDelco 88963604 GM Original Equipment Power Steering Pump.

I would use nothing less for this.

A former mechanic had replaced my bad OEM pump with an aftermarket pump many years ago and it whined the whole time until I finally had enough and replaced that one with the ACDelco OE pump.

Also, use only ACDelco Power Steering Fluid 10-5073 with NO additives.

Ever.

I stumbled across a Youtube that described a one-man procedure to flush out the p/s fluid using the old pump before you remove it.

It worked great.

I found getting to those hidden bolts to be the worst part of the project.

And pulling and reinstalling the pump pulley will have you learning some new cuss words.

And for reasons I will not get into, I had to do those chores twice.

:E:

On the chirping note, I chased a chirping sound on my EXT for some time before I finally figured it out.

I had replaced all of the usual suspects, pulleys, tensioners, and belts.

I bought name brand belts and nothing helped.

Until, I installed a set of Goodyear Gatorback belts.

Goodyear no longer makes the Gatorbacks, but Continental does.

Continental OE Technology Series 4060922 6-Rib, 92.2" Multi-V Belt is the main belt and Continental OE Technology Series 4040377 4-Rib, 37.7" Multi-V Belt is for the a/c.

Now, these are the only belts I use on my 2003 Z-66 and my 2004 EXT.
 
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