Vehicle make/model 2001 Chevrolet  Monte Carlo SS
Mileage = 62,000
Engine size = 3.8
dash lights = No
codes = P1811
work done prior = Changed transmission fluid and filter after noticing
it having a burnt smell.
work done to repair = Just checked for trouble code
tech = JK
question = After the above, I noticed car was taking too long to shift
from 1st to 2nd gear and when it did you could feel the change harder
than ever before. This does not happen every day I drive the car. I
haven't been able to pinpoint any specific time this happens, it just
randomly happens. It may act like this two days in a row and then not do it
again for a couple of days. When scanned the code read P1811, so the
technician cleared the code and told me to drive it and see if the
problem still occurred and if so to return and he would scan it again to see
if the same code came up. Does this mean I may need a whole new
transmission or just maybe a solinoid or some other part? I am very
concerned
about the cost?  Thank You






SF:
Several things can cause this code. Most common is you have a faulty
Pressure Control Solenoid.
May have a component in the trans. is slipping; just as the code
states-'p1811 trans. component slipping' But normally the shifting problems
would occur at all times. The harshness is happening because when the code
appears, the trans. will raise line pressure and change shift adapts to try and
compensate for a slipping component..
A bad PCM, although not as common can also do this. Transmission needs to
be checked by a qualified trans. tech in order to get the problem isolated and
not guess at the problem, because it could be very costly.
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