Question about 1994 Chevrolet Sportvan G30
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Posted on Jan 02, 2017
SOURCE: transmission will not shift
Check the Vehicle Velocity Sensor (V V S)-(Speed Sensor) or the wire harness to the VVS. IF the ECM is not getting a signal from the V V S, the PCM can not give the signal to switch gears. The V V S is on the drivers side of the end ot the transmission that is held on by one bolt. Best thing to do is to have the truck scanned at Auto Zone for a DTC code and to confirm that the V V S has gone bad and they can give you the step by step instruction to replacing the sensor and takes about 15 min to do. Good luck and keep me posted. Keep an eye on the transmission fluid, make sure you don't run the transmission to hard and burn it out over a $40.00 sensor which is better then $1,800 for a transmission replacement.
Posted on Jun 22, 2009
Shifting hard goes to line pressure. Check the filter you put in. There's a short version and a long version. If you have the long version in there, it will bottom out in the pan. Do not change the solenoids because it already shifts differently after changing the filter.
Posted on Aug 16, 2009
If you have already checked the transmission fluid and it is full,You might want a good tranny shop to check the shift solenoid,
Posted on Jan 23, 2010
SOURCE: Shift problems with 4l80E.
try changing the fluid and filter in trans
work F to R with foot on brake several times with a little gas after new juice in trans to loosten things up again
they gum up from sitting too much over winters and stuff
Posted on Jun 29, 2012
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