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1986 GMC S15 Smoking Transmission

Tiny
HAYESWBH
  • MEMBER
  • 1986 GMC S15
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 188,156 MILES
I noticed that the transmission was leaking. I put new pint in and it started leaking out the bottom right away. I started driving it to move back to the back of the house when I noticed that a lot of white smoke was come out from under the truck. This truck never smoked before. Is the trans fluid going back into the engine and make all the smoke or what?
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Wednesday, May 14th, 2008 AT 4:43 PM

1 Reply

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
If the smoke is coming from the tail pipe then you need to replace the shift modulator on the transmission, if the noise is coming from trans area you will probably find its leaking on the exhasut making it smoke.
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Wednesday, May 14th, 2008 AT 6:04 PM

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