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2000 chevy 1500 gears grinding but not tranny


evoeric
01-05-2010, 06:02 PM
i have a 2000 chevy silverado just had the tranny rebuilt and now that there is snow i was testing out the 4wd.When its in 4wd it sounds like some gears are gringing.And when you let off the gas there seams to be a bind in the front end that the truck slows down very fast without hitting the breaks.Just woundering if its the transfer case or the front diff that may be bad if anyone can help that would be great thank you.

j cAT
01-06-2010, 08:52 AM
i have a 2000 chevy silverado just had the tranny rebuilt and now that there is snow i was testing out the 4wd.When its in 4wd it sounds like some gears are gringing.And when you let off the gas there seams to be a bind in the front end that the truck slows down very fast without hitting the breaks.Just woundering if its the transfer case or the front diff that may be bad if anyone can help that would be great thank you.


have you checked these fluids..what is the fluid condition/color front diff / transfercase..?

dab1123
01-06-2010, 01:17 PM
have you checked these fluids..what is the fluid condition/color front diff / transfercase..?

Did you change Gear Ratios in front or rear diffs? I heard of a person who changed ring & pinion in just the rear & had the same problem. R & P must be changed to the same ratio in both ends so they are the same!

evoeric
01-06-2010, 04:54 PM
my truck has 212,000 miles on it last year everything was good.I talked to the guy that rebuilt my tranny.He said he did not change any gear ratios.I drained both transfercase and front diff.Changed both of them still makes grinding noise and when you let off of the gas in 4wd it almost stops by itself.

dab1123
01-06-2010, 05:05 PM
my truck has 212,000 miles on it last year everything was good.I talked to the guy that rebuilt my tranny.He said he did not change any gear ratios.I drained both transfercase and front diff.Changed both of them still makes grinding noise and when you let off of the gas in 4wd it almost stops by itself.

Is it a floor shifter for Transfer Case? If so, I suggest checking the linkage for proper adjustment.

evoeric
01-06-2010, 05:07 PM
yes its on the floor i was just talking to my tranny guy and that is what he said also but how do you do that never messed with one before and thank you all for the help

j cAT
01-06-2010, 05:17 PM
my truck has 212,000 miles on it last year everything was good.I talked to the guy that rebuilt my tranny.He said he did not change any gear ratios.I drained both transfercase and front diff.Changed both of them still makes grinding noise and when you let off of the gas in 4wd it almost stops by itself.

what did the fluids look like ? metal shavings?

dab1123
01-06-2010, 05:18 PM
yes its on the floor i was just talking to my tranny guy and that is what he said also but how do you do that never messed with one before and thank you all for the help

It's not easy, a lot of trial & error. But it is easier if you have someone to help. Have him in the cab shifting while you're under. I can't really explain how to know when you have it properly adjusted. On my '76 Blazer, I could just "feel" when it was right as I shifted into 4WD.

evoeric
01-06-2010, 05:26 PM
i just talked to somone he said if the tires ar not the same tread then it will do it does that make any sence.There was no metel shavings in eather of them.

j cAT
01-06-2010, 05:31 PM
i just talked to somone he said if the tires ar not the same tread then it will do it does that make any sence.There was no metel shavings in eather of them.

the front tires need be the same size same tire and same wear..
when you do not rotate tires or replace one tire when the other tires are worn more than 50% THIS PUTS STRESS ON THE 4WD DRIVE TRAIN.

the front axles are always locked in any 4wd position, so these need be the same size..in the rear you can get away with a greater difference..in wear...is that what you have the front tires are different in wear ?

dab1123
01-06-2010, 05:34 PM
i just talked to somone he said if the tires ar not the same tread then it will do it does that make any sence.There was no metel shavings in eather of them.

Yes it does. If any of the tires are a different diameter, you could destroy the Trans. Case! Even different tread from the same brand of tire could cause big problems.

evoeric
01-06-2010, 05:36 PM
They could be i got 2 used tires and put them on the back.3 out of the 4 ball joints were bad in the front so i changed all of them.The tires in the front have different wear on them beacuse the front was so bad but have not changed the tires yet.

dab1123
01-06-2010, 05:40 PM
They could be i got 2 used tires and put them on the back.3 out of the 4 ball joints were bad in the front so i changed all of them.The tires in the front have different wear on them beacuse the front was so bad but have not changed the tires yet.

I bet that is it. If it were me, I'd leave it parked until I had 4 new matching tires! A lot cheaper than Trans. Case rebuild!

evoeric
01-06-2010, 05:48 PM
its my only winter truck i have do you think it will hurt to drive just in 2wd for now

dab1123
01-06-2010, 05:59 PM
No, it can't hurt anything if both of the rear tires are the same brand & size.

j cAT
01-06-2010, 06:00 PM
its my only winter truck i have do you think it will hurt to drive just in 2wd for now

in 2wd this is no problem...but the front tires should be matched...the rear you can get away with a larger difference in wear..

get some scrap yard tire to match the front tire..

evoeric
01-06-2010, 06:02 PM
yes the rear are the same.I thank you guys alot looks like im getting tires in the am

dab1123
01-06-2010, 06:03 PM
in 2wd this is no problem...but the front tires should be matched...the rear you can get away with a larger difference in wear..

get some scrap yard tire to match the front tire..

To: j cAT; Even different size rear tires could break the ring or pinion gear if he has a rear locker.

dab1123
01-06-2010, 06:10 PM
Your welcome. May I also suggest that you change the lube in the Trans. Case again since that grinding likely left metal shavings. Also, if you can find one of those magnetic drain plugs for the Case. Lastly, The proper AMSOIL lube will protect all the parts in T-Case, Tranny, Diffs/Axles etc. I'll send you my Dealer Web address on your email.

evoeric
01-06-2010, 06:14 PM
ok thank you again

j cAT
01-06-2010, 06:20 PM
To: j cAT; Even different size rear tires could break the ring or pinion gear if he has a rear locker.

the rear wheels with the locker locked would be an issue...the rear diff is normally un locked even in 4wd...unless the rear wheel slips..with a snow condition the size difference probably won't be too restrictive..

since he is in ohio he has a lot of winter to go thru and soon he's gonna use that 4wd as the storm now approches..

as I mentioned in any 4wd position those front axles are locked ..so in auto 4wd those front diff gears are gonna get damaged..as this will not be engaged for a brief period of time like the rear...

in any case he and others that do not practice proper tire rotation and care to this issue will suffer damage to the drive train..

with different tires/treads this is extremely dangerous with a truck/awd vehicle..

dab1123
01-06-2010, 06:34 PM
I agree with you 100%. The reason I mentioned it is because I broke 2 teeth (tips) of my rear diff. ring gear in the middle of summer! (Spun on some gravel which of course caused the locker to engage). The broken teeth were not close together or completely gone, so I didn't have to reaplace it, just weld the hole shut in my diff. cover. But there was a lot of strain on it since I was running 38.5" Gumbo Monster Mudders.

evoeric
01-06-2010, 06:35 PM
good thing i have not tried this with my 04 evo its put away for the winter.And this all kinda sucks since i just put those tires on last month.

j cAT
01-06-2010, 06:42 PM
I agree with you 100%. The reason I mentioned it is because I broke 2 teeth (tips) of my rear diff. ring gear in the middle of summer! (Spun on some gravel which of course caused the locker to engage). The broken teeth were not close together or completely gone, so I didn't have to reaplace it, just weld the hole shut in my diff. cover. But there was a lot of strain on it since I was running 38.5" Gombo Monster Mudders.

with these eaton lockers when new they must be properly broke in...that means no hauling or long trips the first 500mi...then after 1000mi you must replace the fluid..this is part of the hardening of the gear teeth...if the teeth get too hot on break in the teeth will crack or fall off...had a guy I know get a new truck and he loaded it up and hauled off to yellow stone...

he learned the hard way..GM is to blame by not insuring that, it is told to the buyer..

dab1123
01-06-2010, 06:45 PM
Sorry to hear that. Maybe you could sell them using one of those free ads? Back when I bought off road tires, I found I could buy then cheaper from those companies in the 4Wheel & Off Road Magazine. But now days, the price of shipping/freight has gone sky-high. May not be cheaper now.

dab1123
01-06-2010, 06:55 PM
with these eaton lockers when new they must be properly broke in...that means no hauling or long trips the first 500mi...then after 1000mi you must replace the fluid..this is part of the hardening of the gear teeth...if the teeth get too hot on break in the teeth will crack or fall off...had a guy I know get a new truck and he loaded it up and hauled off to yellow stone...

he learned the hard way..GM is to blame by not insuring that, it is told to the buyer..

That's a new one on me, my first time to hear anything bad about the Eaton locker. My Brother has a Chevy Crew Cab 4X4 W/the Eaton, never had any problems. He had LineX sprayed in his bed & started towing camper & hauling heavy loads in the first couple months/800 miles after buying it new.

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