Engine Chirping, video included - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

Welcome Enthusiast! If you already own a Chevy TrailBlazer or GMC Envoy or perhaps thinking of purchasing such a vehicle, then you have come to the best TrailBlazer and Envoy site on the net! Rainier, Bravada, Ascender, and 9-7x owners welcome too!

You are currently viewing our site as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to search and post topics, communicate privately with other members, respond to polls, upload content, and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.
Join Today!
Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > OEM Issues

OEM Issues Original Equipment Repairs and/or Problems

TrailVoy.com is the premier GMC Envoy Forum on the internet. Registered Users do not see the above ads.
Thread Tools
Old 05-02-2019, 10:54 AM
wormwood1978 wormwood1978 is offline
Junior Member
2008 Chevy TrailBlazer LS
Purple 4.2L I6 4X4
Join Date: May 2017
Location: Ellsworth, ME
Posts: 7
Engine Chirping, video included

2008 Trailblazer 4.2, 85,000 miles.

I posted this topic on another forum as well, but wanted to get a few more opinions. I noticed this noise about a month ago when idling but also when the gas pedal is slightly touched. The noise is more noticeable on the passenger side. In the video you will hear the chirps at 3-5 seconds and 24-40 seconds. I had my wife rev the engine a couple times during the video.

I just changed the belt, tensioner and idler pulley and that changed nothing on the sound. I switched from a Gates belt replacing with a Dayco, along with a Dayco tensioner and idler pulley. With the vehicle running and belt on I am hearing occasional chirping and even more chirping when in drive and just touching on the accelerator, then chirping seems to disappear when further pressing down on the accelerator. I used a mechanic stethoscope but still canít pinpoint where exactly the chirping is coming from. Car running with no belt, no noise.

The chirping seems to be coming from the passenger side, perhaps near the power steering reservoir. The power steering pulley seems to occasionally be making a slight noise but I canít be sure. Turning the wheel from side to side does not change the chirping and I donít have any loss of power steering fluid. Annually I suck out the power steering fluid and replace.

Original water pump, fan clutch, ac compressor and power steering pump.
Iím guessing my problem might be the power steering pump but that is a guess. Any thoughts on the cause? Also, is this something I should wait to fix, see how it develops, or fix now? Thank you

Video of my problem:
Reply With Quote Quick reply to this message
Sponsored Links
Old 05-03-2019, 06:13 PM
falcon8667 falcon8667 is offline
Junior Member
2005 GMC TrailBlazer LS
Bordeaux Red Metallic 4.2L I6 4X4
Join Date: Jul 2018
Location: usa
Posts: 79
Sounds like water pump to me. Power steering pump will make more humming sound. Don't forget to check the alternator. Take the belt off and spin each pulley by hand and listen to the noise.

Sent from my SM-G955U using Tapatalk
Reply With Quote Quick reply to this message
Old 05-10-2019, 05:40 AM
wormwood1978 wormwood1978 is offline
Junior Member
2008 Chevy TrailBlazer LS
Purple 4.2L I6 4X4
Join Date: May 2017
Location: Ellsworth, ME
Posts: 7
Solution: New muffler.

I was very close to throwing parts at my problem starting with a new power steering pump. My annual state inspection was due and before they would give me a sticker, they wanted a new end link and a new muffler. They said I had holes in my muffler. Anyhow, I did the end link myself and looked closer at the muffler. Yes some rust, yes original and yes it might quiet my vehicle some, but no holes. I had them do the muffler and now no more chirping and my vehicle is quieter. The chirping I was hearing I thought was somewhere near the power steering reservoir or near the exhaust manifold, I guess it was exhaust related.
Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum forums, you must first register.

Please enter your desired user name, your email address and other required details in the form below.
(Only letters, numbers, dashes and underscores are permitted for user names)
The user name that you choose is permanent and can never be changed.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Where you live (ex: Philadephia, PA)
Vehicle Year
Choose your year
Or enter your choice here:
Vehicle Color
Choose your factory color (Custom, Not Listed & Two-Tones; Use Text Field Below)
Or enter your choice here:
Vehicle Make
Choose your make
Or enter your choice here:
Vehicle Model
Choose your model
Or enter your choice here:
Vehicle Engine
Choose your engine
Vehicle Drivetrain
Choose your vehicle drivetrain
Security Question
Fill in the blanks: Tra___oy
Please select your insurance company (Optional)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Front differential hum - not wheel bearing? - video included Sheehanigans 4x4 Drivetrain 1 05-31-2015 08:07 PM
Engine Light with Noise and Youtube Video JDLAW13 OEM Issues 3 05-29-2015 11:32 PM
Ticking engine with video SteveTB03 OEM Issues 3 03-17-2011 04:59 AM
LS9 Engine Video Build cr8390 Everything Off-Topic 4 07-16-2010 12:21 PM
Bearing Rods / Probable need for new engine Rococo4 OEM Issues 67 02-08-2010 12:03 AM

» Sponsors

Advertising Info

All times are GMT -4. The time now is 03:03 AM.

Chevy TrailBlazer and GMC Envoy Enthusiasts - Copyright © 2004 - 2009 All Rights Reserved.
All trademarks referenced herein are property of their respective owners.
RSS Feed