texasglock23

iTrader: (1)

Last night I was cruising through a friends alleyway when I heard a disturbing "clicking/ticking" noise, some times if I mashed the throttle for a quick rev in rpm, it would quiet down for a second it seemed, did this both forward and reverse.

Sounded to be as if it were coming from the rear of my truck, and not the front...going to investigate tomorrow, just thought I would get some opinions first.

Any ideas? I know it is vague, maybe I can try to shoot a vid of the noise.

texasglock23

iTrader: (1)

Other suggestions were:
ujoint
output shaft
open up diff check for missing teeth and check the gov lock

Robert91RS

iTrader: (2)

Could def be a ujoint or hub bearing.

texasglock23

iTrader: (1)

yeah, we looked at it yesterday, I bought a ujoint today and gear lube to check and change.

WhiteChevy3

yea mine is the same way.. you throw it in neutral going about 10mph it sounds like a deck of cards in some bike spokes. i havent had time to figure out what it is though.

BlackGMC

iTrader: (31)

do you still have the stock G80?

LS1TRUCKGUY

iTrader: (7)

Check the carrier bearing if you have a 2pc driveshaft.

texasglock23

iTrader: (1)

that's serious what it sounds like, bit in reverse and drive.


Stock G80 with 76k miles


1pc shaft

I am pulling the cover today, changing fluid, driving for a bit, then changing again (per a buddies suggestion, if you don't see the point chime in) and torching the rear ujoint and replacing that ******. If I can't visually see anything wrong, and of the ujoint does not fix it, I will look for someone in the DFW who can do rearends on the side and order new parts. I would rather fix it now before it goes out and leaves me stranded one day. My truck has relatively no mods, but I would prefer to fix the weak points now.

whitedakota

iTrader: (1)

I'd say u-joint. I've put 2 in mine in the last 50,000. I'd only change the rearend fluid once.

texasglock23

iTrader: (1)

Ujoint and fluid are getting changed today, I wanted to go ahead and do the fluid just to check the rearend. I've had this truck for little over a year and 10k miles, but it was used to pull a boat primarily with the PO. Just cheap insurance.

Not quite sure why we suggested to do it twice, but since he worked on them for several years, I tend to take his word. It would save me some money just changing it once. Stated it was a GM TSB