Strange sound

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Strange sound

Postby Horsehammerr » Sun Oct 15, 2017 3:18 am

Riding on 190,000 miles now and runs great but , has been developing a sort of Growling sound at all speeds. Loader at higher speed and mellows out at slower speed but still there. No noticeable odd functions anywhere, just the sound. Any Ideas ? :?:
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Re: Strange sound

Postby HenryJ » Sun Oct 15, 2017 3:29 pm

Pinion bearing on rear axle? Mine had soft shims that squished out on the stock rear. I went to the more robust ZR2 rear soon after finding that.

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Re: Strange sound

Postby Horsehammerr » Mon Oct 16, 2017 12:59 am

Is the ZR2 rear wider than stock CC ? Can an upgrade bearing replace this possibly damaged bearing ?
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Re: Strange sound

Postby Torskdoc » Mon Oct 16, 2017 7:19 am

Yes the ZR2 Rear is a little wider (by an inch or two IIRC). to replace the pinion gear bearing the whole rear needs to be disassembled, new parts including shims, then the ring gear and pinion gear needs aligning. NOT CHEAP by ANY MEANS. Probably better off finding a complete Rear in the Junkyard with the SAME GEAR Ratio and just swap the rears, putting new brake parts on the new rear.

The pinion on my 95 Jimmy hummed like a whore in church from the day my father bought it new. GM never could fix it. So we lived with it. It lasted about 125,000 before the bearing self-destructed and the pinion egged out the bearing mounting hole. So I went down to the junkyard and found a rear out of a 97 Sonoma, swapped rears and put new brakes on the rear. Been hum free for 3 years and 9000 miles now. Took a few hours on the driveway to do the swap.
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Postby _STUCKY » Tue Oct 17, 2017 5:42 am

Horsehammer, I still have my stock 3.73 geared axle. It would look great under your truck.

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Re: Strange sound

Postby Horsehammerr » Thu Oct 19, 2017 5:40 pm

Have sent two PM's to STUCKY
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Re: Strange sound

Postby Horsehammerr » Fri Oct 20, 2017 12:43 am

Anyone have a ZR2 rear axle assembly for sale ? 3.73 ratio
[size=75]'02ZR5 YellowCruzCab-Airbox chopped,Quadlights,Intake defuser chopped,Precat chopped,HD Bilsteins, 9x16 '84 Corvette wheels, NEXEN 245/50 tires, front & rear Sway bars, All Poly bushings in full suspension, front lowered 3 1/2", ZR2 rearend with 5" suspension lowering , FUN FUN FUN
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Re: Strange sound

Postby Horsehammerr » Fri Oct 20, 2017 12:47 am

HenryJ wrote:Pinion bearing on rear axle? Mine had soft shims that squished out on the stock rear. I went to the more robust ZR2 rear soon after finding that.
What all needs to be done to make this switch ? :?:
[size=75]'02ZR5 YellowCruzCab-Airbox chopped,Quadlights,Intake defuser chopped,Precat chopped,HD Bilsteins, 9x16 '84 Corvette wheels, NEXEN 245/50 tires, front & rear Sway bars, All Poly bushings in full suspension, front lowered 3 1/2", ZR2 rearend with 5" suspension lowering , FUN FUN FUN
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Re: Strange sound

Postby Horsehammerr » Tue Nov 07, 2017 2:49 am

Horsehammerr wrote:
HenryJ wrote:Pinion bearing on rear axle? Mine had soft shims that squished out on the stock rear. I went to the more robust ZR2 rear soon after finding that.
What all needs to be done to make this switch ? :?:
Got my 179 mile ZR2 rearend in , now working on getting brakes back together. Not sure about hooking up the parking brake cables , any help is welcome. Oh yeah , had to relocate my axle assembly 1 1/4" back from factory location so my drive shaft was not jambed tight to tranny.
[size=75]'02ZR5 YellowCruzCab-Airbox chopped,Quadlights,Intake defuser chopped,Precat chopped,HD Bilsteins, 9x16 '84 Corvette wheels, NEXEN 245/50 tires, front & rear Sway bars, All Poly bushings in full suspension, front lowered 3 1/2", ZR2 rearend with 5" suspension lowering , FUN FUN FUN
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Re: Strange sound

Postby Horsehammerr » Fri Nov 10, 2017 4:18 am

Tricks to changing Parking Brake forward Cables ?
[size=75]'02ZR5 YellowCruzCab-Airbox chopped,Quadlights,Intake defuser chopped,Precat chopped,HD Bilsteins, 9x16 '84 Corvette wheels, NEXEN 245/50 tires, front & rear Sway bars, All Poly bushings in full suspension, front lowered 3 1/2", ZR2 rearend with 5" suspension lowering , FUN FUN FUN
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Re: Strange sound

Postby Horsehammerr » Sun Nov 12, 2017 8:53 am

:twisted: After success in ZR2 rear axle assembly install , now the front end is GRINDING , What Is This ?
[size=75]'02ZR5 YellowCruzCab-Airbox chopped,Quadlights,Intake defuser chopped,Precat chopped,HD Bilsteins, 9x16 '84 Corvette wheels, NEXEN 245/50 tires, front & rear Sway bars, All Poly bushings in full suspension, front lowered 3 1/2", ZR2 rearend with 5" suspension lowering , FUN FUN FUN
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Re: Strange sound

Postby plantone » Mon Nov 13, 2017 11:39 pm

check the hub bearings up front

at 190k if you havent replaced them, they're long past due for a failure to happen, likely even due for another round if they've been replaced once already.
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Postby _STUCKY » Tue Nov 14, 2017 7:02 am

If it is actually the differential, I have one of those also. Just under 100,000 miles, 3.73 gears.

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Re: Strange sound

Postby Horsehammerr » Thu Nov 16, 2017 2:19 am

The way I'm set up , I'm actually thinking about going AWD. Need complete '95 Olds. Bravada front drive . Non-electric and eliminates all the vacumm BS.
[size=75]'02ZR5 YellowCruzCab-Airbox chopped,Quadlights,Intake defuser chopped,Precat chopped,HD Bilsteins, 9x16 '84 Corvette wheels, NEXEN 245/50 tires, front & rear Sway bars, All Poly bushings in full suspension, front lowered 3 1/2", ZR2 rearend with 5" suspension lowering , FUN FUN FUN
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Re: Strange sound

Postby Horsehammerr » Thu Nov 16, 2017 2:34 am

I know Cardone CV axles are the recommended replacements but, what about the Hub Bearings, any recommendations there ?
[size=75]'02ZR5 YellowCruzCab-Airbox chopped,Quadlights,Intake defuser chopped,Precat chopped,HD Bilsteins, 9x16 '84 Corvette wheels, NEXEN 245/50 tires, front & rear Sway bars, All Poly bushings in full suspension, front lowered 3 1/2", ZR2 rearend with 5" suspension lowering , FUN FUN FUN
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