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Tech & Fab
OBDII code - P0894.....
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<blockquote data-quote="Byke" data-source="post: 1477760" data-attributes="member: 19961"><p>Assuming you have the 4L80E.....the most likely cause is the torque converter. If your scanner will data stream then you should be able to check T.C slip by driving it with scanner hooked up. You want to check % or rpm T.C. data when the T.C. is engaged (freeway is the best place). You need to drive at a steady speed and move the throttle a little up and down. If you let all the way off or feed it too much throttle too fast the T.C. is commanded to turn off. The RPM should stay AROUND 0 and change a little to the plus and minus side. If the RPM difference is too great (don't remember the exact # that is "safe" off the top of my head) then the computer puts the trans into failsafe and that is why the shifts get hard. And yes, it has a reusable gasket, I would suggest you reuse it and NOT replace it with an aftermarket cork or paper gasket.</p><p></p><p>Hope this helps</p></blockquote><p></p>
[QUOTE="Byke, post: 1477760, member: 19961"] Assuming you have the 4L80E.....the most likely cause is the torque converter. If your scanner will data stream then you should be able to check T.C slip by driving it with scanner hooked up. You want to check % or rpm T.C. data when the T.C. is engaged (freeway is the best place). You need to drive at a steady speed and move the throttle a little up and down. If you let all the way off or feed it too much throttle too fast the T.C. is commanded to turn off. The RPM should stay AROUND 0 and change a little to the plus and minus side. If the RPM difference is too great (don't remember the exact # that is "safe" off the top of my head) then the computer puts the trans into failsafe and that is why the shifts get hard. And yes, it has a reusable gasket, I would suggest you reuse it and NOT replace it with an aftermarket cork or paper gasket. Hope this helps [/QUOTE]
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OBDII code - P0894.....
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