we have an 03 suburban that makes a chirp noise all the time. we have removed the belts, still makes the noise, replaced main bearings and connecting rod bearings, still makes the noise. really want to fix this problem but cant figure out what it is. any help is greatly appreciated. thanks

 

Could you describe the noise a little better? Sounds like it could be one of your pulley bearings going out. Most likely a tensioner/idler or altenator.

 

slw, he said he pulled the Belts, that'd eliminate the pulleys and all, but, if I had to guess, I'd say a "dry" Rocker Arm, Oil Seal, maybe even a Motor Mount that's loose ??

 

Missed that part.

Still hard to say without hearing it.

 

Does the "chirp" follow rpm? Or moving, not moving? You really need to pinpoint it closer.