ac compressor problems

[rddaves54]

I need to replace the ac compressor; the ac is compressor is making a slight vibration when running and when the ac is off the vibration stops so pulley and compressor are shot I am guessing. It even squeals a little until you shut off ac when first driving then after a while it stops squealing. Does that sound like the compressor is about to go all the way out?

I need a diagram of ac unit for the 2002 rear unit Tahoe but have not been able to find anything can someone post a diagram?

[truckdude239]

could be a bad belt teniors

[clinebarger]

The vibration is caused by liquid slugging of the A/C compressor. This is an internal failure in the A/C compressor. The serpentine belt tensioner and serpentine belt will be damaged if the compressor is not changed.

I dont know what exact diagram you need but here goes nothin'

[truckdude239]

it is fairly straight forward job like 4 hours hardest part is the rear expansion vavle

[rddaves54]

Thanks for the help and I am in the middle of changing the belts and pulley tensioners and need to ask is there a way to adjust main belt tensioner?

Does it need to be replaced when it has moved to its limits or can it be readjusted back?

[truckdude239]

its spring loaded there is no adjustment in it if its gone bad it time for a replacement