What Is This Noise, Where Is It Coming From?

[YZINGERR]

Inside cabin you hear a ticking or thump noise, what is it?

This noise doesnt seem to be in concert with the engine (If you rev the engine or increase idle, the noise doesnt change).

2004 1500 silverado

 

http://www.youtube.com/watch?v=0ILROXa-2cI

[carneyman]

Its a bomb!!!

 

Can you hear it any better if you are by the hood? Or is it just inside the cab? Ac on or off? Dead animal hanging onto the drive train?

[pennzoil29]

I give up. What is it? It sounds like an animal trying to get out of a box or something.

[cymmgarcia]

Sounds like a bad HVAC Actuator (controls flaps) with stripped gears. I know first hand cause it happened to my '04 crewcab.

 

Try engine off, but key forward to power A/C. Move Heat/Cool or Vent Selector to see if noise changes.

 

Good luck,

 

Candido

[YZINGERR]

Sounds like a bad HVAC Actuator (controls flaps) with stripped gears. I know first hand cause it happened to my '04 crewcab.

 

Try engine off, but key forward to power A/C. Move Heat/Cool or Vent Selector to see if noise changes.

 

Good luck,

 

Candido

I will certainly try that, thanks for the heads up!

[YZINGERR]

I give up. What is it? It sounds like an animal trying to get out of a box or something.

I thought the same thing, maybe there is an animal in there. Damn neighborhood cats are always playing in the jungle gym that is my truck (i have seen them climb up under my truck more times than i care to count). So I thought that maybe one of those MFs might have gotten stuck between the engine and firewall.. or something like that. Nope. week after week it is still there.

[Pbaker003136]

That is exactly what my 05 Suburban was doing. Under warranty at the time they replaced the A/C dampner motor, gears were stripped.

[YZINGERR]

That is exactly what my 05 Suburban was doing. Under warranty at the time they replaced the A/C dampner motor, gears were stripped.

I dont even use the AC more than 1-3 times a year!

I will check it out, and thanks!

[YZINGERR]

Sounds like a bad HVAC Actuator (controls flaps) with stripped gears.

Try engine off, but key forward to power A/C. Move Heat/Cool or Vent Selector to see if noise changes.

 

Good luck,

 

Candido

The noise didnt change when i did that. I will have to see what Mr. GOLDwrench says!

[Guest Riggs]

had a cat riding on the transmission for 3 days.... seriously driving to school and everything in winter..

 

pulled in the shop and i could hear it meow... then it jumped out and chased it around for 20 min...

[VMax2007]

had a cat riding on the transmission for 3 days.... seriously driving to school and everything in winter..

 

pulled in the shop and i could hear it meow... then it jumped out and chased it around for 20 min...

 

Riggs,

 

Pretty sure that's not what they mean by "chasing pu$$y".

[Guest Riggs]

lol....

[YZINGERR]

This cat in my truck would have beent here for months...

chasing pu$$y, hilarious!