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Very weird Transmission!!!!!

Hello I use a full size blazer to plow with and lately whenever i turn left the transmission slips bad.. but as soon as it straightens out again its fine??? Any hints? I just had the te tech transmission flush done! Oh yeah its a th 350 trans Thanks guys
 

75

PlowSite.com Addict
Only a guess here.....

I'm no transmission expert by any means, but I am wondering if perhaps the problem is not in the trans itself but loss of power/traction somewhere else in the driveline? Does it do this in 4x4, 2wd or all the time?
 

Chuck Smith

2000 Club Member
Location
NJ
It might have something to do with the flush, but I would guess a worn trans mount, or cab / body mount bushings. Worn body bushings would allow the body to move, and the shift linkage is connected to the truck body. Any movement, and it could disengage it from gears, since the trans is mounted to the chassis. Does it slip if you put it in L1 or L2? 2wd or 4wd wouldn't make a difference if the body bushings are worn out. Like I said, just a guess. I can assume you checked the level of the trans fluid.....

~Chuck
 
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A

AllSeasonsAllReasons

Junior Member
Thanks for your opinions Chuck! Yes did check trans fluid! Also i had the flush done after the problem started! And yes it does slip in all gears
 

Chuck Smith

2000 Club Member
Location
NJ
I'd look real close at the body mounts.... Other than that, I can't help you much! Transmission internals aren't my bag. The fact that it happens turning left is VERY odd.
You might also want to open the hood, and rev the motor to about 2,000 RPMs several times, and see how much it "lifts" from the torque. You might have a busted motor mount.

~Chuck
 

cut-rite

Junior Member
If the mounts and lincage ar ok drop the pan and change the filter. It is possible that the filter is loose and sucking air, if it continues it will burn up.
Brad
 

karl klein

Senior Member
Location
omaha,ne
are you positive its the trany not the rear diff gears because when you turn the two tires turn at diffrent speeds so if your rear end is screwed up maybe the gears are not hooking up
 

sam c

Member
Location
southeastern NH.
When you turn left all the oil in the trans sloshes to the side away from the suction point. either a baffle was removed during the flush or an o-ring/gasket is missing from the filter suction port.
 

Chuck Smith

2000 Club Member
Location
NJ
Originally posted by AllSeasonsAllReasons
Hello I use a full size blazer to plow with and lately whenever i turn left the transmission slips bad.. but as soon as it straightens out again its fine??? Any hints? I just had the te tech transmission flush done! Oh yeah its a th 350 trans Thanks guys

I would think that with the flush, you also had the trans filter replaced, which would mean more than a missing O ring, since it did this before the flush/filter change. It also does it in 4wd, so a problem with the rear differential is not the cause of this.....
With the fluid at the proper level, and considering how far into the trans pan the filter sits, even if the filter fell off, on a turn the trans could still pump fluid. Remember, this is the GM TH350 transmission, and holds approximately 21.5 pints (about 11 quarts) of fluid. Completely draining the fluid in the pan only removes about 8 pints (4 quarts). The dipstick says the pan is "full".

This is weird, and I for one would like to finally hear what is causing this problem.

~Chuck
 
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AllSeasonsAllReasons

Junior Member
Well Chuck I have decided to have it pulled and i am putting a th 400 behind it its completely rebuilt! But the transmission shop is going to rebuild the trans in it for me for a spare so i will post the outcome as soon as i here from them! Thanks again guys!
 

John DiMartino

PlowSite.com Veteran
Location
Walden,NY
TH400 is strong,but inefficient-you will think you lost 15 hp-you did the tranny ate it,and you'll never see it again,it goes to make extra heat and turn those taller ,heavier gearsets and clutches.Good luck with it-now you need a 502BB to compensate for the tranny LOL
 
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