Question about Chevrolet Cars & Trucks
Will not shift into overdrive
Posted by Anonymous on
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Posted on Jan 02, 2017
transmission shift solenoid is stuck open this is a common vehicle issue in automatics and not particular to any make or model vehicle 15 dollar part and arm and leg for labor if taken in
heres an idea to try
take out the transmission filter and replace with new one make sure to take not of any metal debry in trans pan this indicates the trans had sheered its gears down and a trans rebuild is needed
the transfilter needs to be changed at a certain milage interval they can get clogged up
there is a kit you buy for your truck at any parts store
its an easy change hour of time unbolt trans pan unbolt trans filter and put new one in
kit comes with new seals less than an hour you can do it yourself
to overdrive you would feel a difference in shift badley if it was that something to keep in mind
Posted on Dec 06, 2008
FIRST CHECK TRANSMISSION FLUID LEVEL.IF FLUID LEVEL IS GOOD. YOUR PROBLEM COULD BE THROTTLE CABLE IS BINDING OR OUT OF ADJUSTMENT.YOUR GOVERNOR IS DAMAGE OR MISSING PARTS.YOUR OIL PUMP PRESSURE REGULATOR VALVE OR TV BOOST VALVE STUCK OR DAMAGE NOW .IN THE VALVE BODY.STICKING LINE BIAS VALVE TV LIMIT VALVE MODULATED TV UPSHIFT OR DOWNSHIFT VALVES.OR A STICKING THROTTLE VALVE PLUNGER.STICKING OR STUCK 1 -2 2 -3 3 -4 THROTTLE VALVES OR PRESSURE REGULATOR VALVE.THE SPACER PLATE GASKETS DAMAGE.ALSO THE 2 -4 SERVO ASSEMBLY ACCUMULATOR DAMAGED.THE 2 - 4 BAND BURNED OR ANCHOR PIN NOT ENGAGED.
Posted on Aug 31, 2009
hav truck scanned for bad codes--ur trans is old with alot of wear-do u perform required upkeep-ajust bands n tv valve etc
Posted on Jan 12, 2010
Bad transmission, that's not a good answer. Bring it to the shop [so we can guess around], not a good answer either.
A good mecahanic will respond with something about the solenoids.
I have repaired the 4L80E on my tow truck, I have to do that almost every year, the last time it ran perfectly but when I push the pedal to the metal, it shifted from 3rd gear to 2nd and stays on 2nd gear until I turn the ignition off and start again.
The transmission was totally rebuilded so the answer "Time to rebuilt the transmission" is not acceptable.
I took it back to the shop and the mechanic replaced both solenoids A and B, that was the only thing that hasnt been replaced before, it was just a guess but works
So, I am not a mechanic but my sugestion is to replace the two speed sensors and solenoids before you take the tranny out of the car and be carefull who are you taking the transmission to because guessing is not always the best course of action
The two speed sensors are easy to replace, the solenoids are inside of the valve body but you may be able to replace them without removing the transmission from the truck
Posted on Jan 13, 2010
look in the overdrive cable see if its atatched and working if theres no overdrive cable if the overdrive sensor light is on than it could be an overdrive sensor.
Posted on Jan 15, 2010
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