Question about 2005 GMC Sierra

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Giving code po 894transmission - 2005 GMC Sierra

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You probably have a "band" slipping in your transmission. Take it to a shop and have the bands adjusted, and have the transmission fluid drained, filter replaced and refilled.

Posted on Oct 16, 2013

  • Denis Houle
    Denis Houle Oct 16, 2013

    sorry but band it's not ajustable ,,,,changing oil won't do any good,,,,,,,, seals could be cut and oil change and oil pressure would not be any good

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Code P0894 is .... transmission component slipping
pcm look for engine rpm when transmission shift and time
if time is too long to drop it raise oil pressure with the force motor to 1 or 2 psi and retest when force motor is at max, then it code P0894
two things component realy slip or force motor is not able to raise pressure
have oil pressure (transmission) check with scan tool raise pressure of force motor to see if able to

Posted on Oct 16, 2013

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