New poster, previous lurker. I have an 07 Tahoe LT that I bought used with about 55k on it. Had it checked out pretty thoroughly before I bought it, had no serious issues.

Within the last month, it has started making a squeaking sound when I go over bumps, but only when the gas pedal is depressed. If I am coasting or braking and hit a bump, it doesn't make the same sound.

Any help you can provide would be very much appreciated.

 

Welcome to the forum
Squeaks can be subjective to the listener...
I would suggest checking all the motor and transmission mounts
inspect the sway bar end links, consider a few squirts or silicone lubricant into the sway bar bushings...
I would also consider having the the spline shaft inspected/lubricated
Inspect the u-joints...
Check the front struts, make sure the springs are seated and the rubber seat is not torn or the spring mis-aligned.
Check that the rear shocks are securely tighten...

Some of these items may not make squeaks but more grind or clunk sounds, but since the sound could be heard differently, I listed some of the more likely sources of sounds while moving...

Lastly don't rule out checking all the engine air intake snorkel assembly for correct fitment and that all clamps are secure... the squeak could also maybe be a sound created by air sucking... just some thoughts....

 

funny my 07 suburban just started doing the same thing. when i accelerate i hear a squeak and click. i researched a bit and saw that it could be my ball joints or control arm bushings. funny when it gets cold out it does it and when it gets warm out it stops. i also found something where the body mount insulator is the problem. don't know if i can post a link to another forum but here goes


Pop or clunk while turning or driving

 

thank you very much, this is what i was looking for.

 

i dont hear a click or pop at all, it is just a low, whiny squeak when i go over bumps while accelerating.

 

probably the bushings then...control arm or ball joint. let us know what you find

 

Did you ever find out what this was? I am having the exact same problem now. Thanks!