[Ryno78]

G'day,

Have an 83 Sierra. When accelerating/driving there is a deadset annoying squeak coming from under the car.

Appears to be close to directly under the front seats or close enough.

Put clutch in and roll and the noise goes away?

Any suggestions or ideas?

Cheers,

Geoff

[sideways]

Unis?

[MrRocky]

Thrust bearing
Gbox out and replace
Prob worth doing the rear main, gbox seal and clutch while your at it on an 83 model

[Gwagensteve]

That’s consistent with a uni that’s dry and close to failure.

[sideways]

MrRocky wrote:

Thrust bearing
Gbox out and replace
Prob worth doing the rear main, gbox seal and clutch while your at it on an 83 model

Stuffed thrust bearing would make noise when the clutch is pushed in, the opposite to the problem OP is having.

[Ryno78]

Thanks for that. I'll get the Uni's looked at. Thrust bearing also needs replacing unfortunately, a bought a lot of work

[MrRocky]

Never had a uni squeak normally metallic clink for me means too much play

[Gwagensteve]

Definitely heard them squeak... normally not that long before they let go

[rexhunta]

I had squeaky unis on the jack shaft. Sounds exactly like the problem he's having.

[sideways]

Yeah I've had them squeak like OP is saying. Both times just 1/4 of the uni was dry and there was no play.