1994 Chevy Truck fluid loss

1994 CHEVROLET TRUCK

ZIL72

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Transmission problem
1994 Chevy Truck V8 Two Wheel Drive Automatic

Is the front seal of the tranny in this truck servicable ? The truck has 135,000 miles and is loosing alot of fluid. A new or rebuilt tranny does not seem like money well spent. I have been told this seal fails and causes this condition. If it can be replaced and extend the life of the tranny I would like to do that. Thanks.

Dec 9, 2008 at 7:36 AM

JACOBANDNICKOLAS

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Hi:
Yes the input shaft seal can be replaced, but the trans will need removed to do it. Are you sure that is where the leak is coming from?

Dec 9, 2008 at 9:16 PM

ZIL72

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will the pump bearings/bushings failure cause this ? replacing the pump may be an option to reduce cost as the cost of a rebuild for a truck this age is not worth it. thanks for the reply.

Dec 10, 2008 at 9:10 AM

JACOBANDNICKOLAS

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Hi Again:
Based on the cost of new trucks, I, myself, have decided to continue repairing my old truck. There really isn't anything that would cost more than 4 months worth of car payments.

Dec 10, 2008 at 10:14 AM

ZIL72

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Good point .
I think if the tranny is out , and it is going to be apart ,replacing the pump should be considered. It seems unlikly that just the seal failed and replacing it would solve the problem . Agree ?

Dec 10, 2008 at 11:53 AM

JACOBANDNICKOLAS

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110,176 POSTS

Hi:
Yes you are right. Seal failure many times is caused by wear on the torque converter. The steel that the seal rides on wears allowing fluid to leak. Honestly, I would have it removed and inspected. There is also a seal where the front pump bolts to the housing that could be leaking. Regardless, the most expensive part of the repair will be the labor to remove and replace the trans itself. If it ends up to be more, then you can decide which is the best way to go, repair it or get a new one.

Let me know how it goes for you.

Joe

Dec 10, 2008 at 1:18 PM