View Full Version : Ticking noise
fredg369
03-25-2006, 07:52 PM
Whats up with the exhaust tic.....I noticed it when it was parked anr the engine off...but tonight it was idling after a 20min drive I was standing outside the truck and heard it doing it...Why and what the hell is that noise there....tic tic tic...tic tic...tic tic...tic tic tic tic ....tic tic....Jesus H $%%^%....errrr:suicide:
Would a different muffler like magnaflow stop that sound?
SSmokinTB
03-25-2006, 08:36 PM
Nope...metal expands when hot and contracts as it cools. The larger the surface, the more the expansion/contraction. Since we have some big-azz exhaust pipes we get some awesome sound effects that the little rice-bangers could only wish for. :dielaugh:
ScarabEpic22
03-27-2006, 01:59 AM
Actually, I think it is the fan clutch ticking. It does on my 02 TB, I have popped the hood and put my ear close (not on) to the fan and it ticks a little.
FastFL
03-27-2006, 09:51 AM
Yes! I am not alone - it is not a fan but it is the exhaust... :confused:
It does it for a good 10-15 minutes after parking - especially noticable while in the garage.
I was going to ask someone if this is common but I guess it is.
Bulldog
03-27-2006, 10:27 AM
It is the exhaust cooling. It has happened on all my vehicles. You're not alone.
ScarabEpic22
03-27-2006, 04:05 PM
It is the exhaust cooling. It has happened on all my vehicles. You're not alone.
Ohh, and I also have that sound too!!!:laugh: :duh:
Yep, it is a combo of both for me, I can definately hear the fan ticking ever so slightly when I open the hood, but the exhaust does tick when cooling off.
fredg369
03-27-2006, 06:27 PM
Mines is doing it even when the car is running and has been driven to opperating temps.Not just when it is turned off.
Should it do it when its running?
BriZad
03-27-2006, 09:36 PM
If you turn your radio up louder the sound should go away :laugh::rotfl:
fredg369
03-27-2006, 10:16 PM
I don't hear it in the truck just outside of it...:worried:
Your right the volume on the radio fixes alot of GMs bull$hit!:suicide:
a1hollywood1j
04-26-2008, 01:33 AM
Yes I have the same issue on my 05 trailblazer, I beleive that it isnt a normal condition and is a defect in the exhaust system. I have driven many trailblazers and dont remember ever hearing this noise. It is definatly the exhaust system and if under warranty you should try to get them to replace this.
It's the metal in the exhaust. Mine does it when at operating temp, and when idling, and when off and cooling. I think it gets some air as it's running and cools enough to contract the metal a little, so you get the tick. I've been outside mine when idling and hear it. No problems. Sounds like an empty, metallic, hollow click sometimes, and like a small, rapid tick at times.