Question about 2005 GMC Sierra
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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Posted on Jan 02, 2017
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