My wheel locked up!

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10-27-2009, 03:07 AM
V8orVnothing

My wheel locked up!

I have a 05 silverado with 50k miles on it and this is what happened. It's happened twice already. I get in my truck put it in reverse to pull outt and as i'm going in reverse my truck starts to shake as though one of my wheels in locked!
Both have happened on rainy days but have no idea what it may be!
I think the wheel that locked up was my rear wheel on the driver side but I'm
not sure
10-27-2009, 03:45 AM
Botlfed

Quote:

Originally Posted by V8orVnothing

I have a 05 silverado with 50k miles on it and this is what happened. It's happened twice already. I get in my truck put it in reverse to pull outt and as i'm going in reverse my truck starts to shake as though one of my wheels in locked!
Both have happened on rainy days but have no idea what it may be!
I think the wheel that locked up was my rear wheel on the driver side but I'm
not sure

possibly low rear end oil....idk, limited slip could also be sticking...
10-27-2009, 06:51 AM
oleshifty

check caliper pins.... if one fell out/broke, the caliper will hit rim in reverse.
10-27-2009, 09:55 AM
txarkitekt

Quote:

Originally Posted by LamboDoNoMo

... limited slip could also be sticking...

+1. I bet your truck has the G80 LSD...and since you said it has happened only when it has been raining leads me to think that your LSD was activated just before you put it in park and left it. Since it is a mechanical LSD, it will not unlock until you put it back into Drive and travel for a set distance to allow it to unlock. No biggie really. If you feel uncertain about it, you can always drain the fluid and replace it with new stuff--but make sure to NOT use synthetic stuff or additives. Just use regular 75W-90 rearend fluid.
10-27-2009, 11:28 AM
Grohe

Quote:

Originally Posted by txarkitekt

No biggie really. If you feel uncertain about it, you can always drain the fluid and replace it with new stuff--but make sure to NOT use synthetic stuff or additives. Just use regular 75W-90 rearend fluid.

Why no synthetic?
10-27-2009, 11:58 AM
txarkitekt

The G80 unit (along with Eaton and Auburn LSDs) use bands/clutches. If you use synthetic or any additive, it can slip in operation will not let the LSD work as designed.
NOW, if the LSD in question was a Detroit TrueTrac, then I would recommend using a good synthetic like Royal Purple...
10-27-2009, 01:26 PM
oleshifty

lucas 80-90 all the way. has additives for limited slip, works great for open rears.
10-27-2009, 03:51 PM
cjriojas

Quote:

Originally Posted by txarkitekt

The G80 unit (along with Eaton and Auburn LSDs) use bands/clutches. If you use synthetic or any additive, it can slip in operation will not let the LSD work as designed.
NOW, if the LSD in question was a Detroit TrueTrac, then I would recommend using a good synthetic like Royal Purple...

i have a G80 and the owners manual says specifically ONLY synthetic.
10-27-2009, 04:44 PM
pl4yboy

Quote:

Originally Posted by oleshifty

lucas 80-90 all the way. has additives for limited slip, works great for open rears.

You would know all about open rears.
10-27-2009, 05:00 PM
V8orVnothing

Quote:

Originally Posted by txarkitekt

+1. I bet your truck has the G80 LSD...and since you said it has happened only when it has been raining leads me to think that your LSD was activated just before you put it in park and left it. Since it is a mechanical LSD, it will not unlock until you put it back into Drive and travel for a set distance to allow it to unlock. No biggie really. If you feel uncertain about it, you can always drain the fluid and replace it with new stuff--but make sure to NOT use synthetic stuff or additives. Just use regular 75W-90 rearend fluid.

I think your right cuz I do put it in park and drive a little and it goes away
but I'll wait to see if it happens again it was a while before it happened the second time but if it does happen again I'll try what you suggested
10-27-2009, 06:24 PM
txarkitekt

Quote:

Originally Posted by cjriojas

i have a G80 and the owners manual says specifically ONLY synthetic.

What if the Owner's Manual told you to shove a fork in your butt? Would you do it?

Wait, nevermind. You prolly do that anyway.

What if the Owner's Manual said to go jump in a lake? Would you do it?
10-27-2009, 08:55 PM
cjriojas

if the manual told you to drive around neighborhoods in a van.....:dancenana:

I guess chilton's, haynes, the owners manual and every shop i have ever talked to is wrong
10-27-2009, 09:06 PM
molitor

maybe the e-brake is being applied when he parks and the pads are locking on the rotor. my truck pops when i let off the brake after slowing down at a light, the brakes always lock in the front, probably bad pistons in the calipers
10-27-2009, 11:52 PM
oleshifty

Quote:

Originally Posted by pl4yboy

You would know all about open rears.

....HILARIOUS :rolleyes::rolleyes:
10-28-2009, 12:44 AM
txarkitekt

Quote:

Originally Posted by cjriojas

if the manual told you to drive around neighborhoods in a van.....

....with "Free Candy" spray painted on the sides, would you do it???

I ALREADY AM. :greg:
10-28-2009, 01:19 PM
GasGuzzler

OEM have GM synth. Aftermarket call for different lubes. It's the additive you don't wanna put in the newer truck axles.