Transmission in 96 blazer doesnt shift from drive to park i have to manaully shift from under neath

Disconnect shift cable from transmission linkage and try to manually put transmission in drive gear ( make sure wheels chocked/park brake on ). If transmission goes into drive gear, suspect a shift cable or shifter assembly problem. If you can't manually shift into drive gear by hand with cable disconnected, suspect internal transmission/shift linkage issue

Is it possible the lever for linkage got whacked and is bent?

check the linkages from gear stick to gear box may be loose.

It sounds to me that your linkage on the transmission is out of adjustment. If it is as you described, then Neutral should be park. To fix this problem, you need to shift the car all the way into park, (set your parking break. Add wheel chalks if possible.) Locate the shifter linkage on the transmission,(either under the hood, or under the car) loosen the lock screw/s on the linkage. move the linkage on the transmission either direction.(you should feel the clicks of the gears) Park gear, is typically all the way opposite the direction the linkage is inserted. Click the selector all the way until it stops rotating. Then tighten the screw/s. Try your shifter now, you should feel the gears click smoothly into place. Hope this helps.

For gear shift issues and gear stuck issues,the help links are provided below. Click the link below to go through troubleshooting procedure:---- ---- Car will not move when in gear?

http://repairhelpcenter.blogspot.in/2012/02/car-will-not-move-when-in-gear.html ---- transmission sticks in first gear? http://technoanswers.blogspot.com/2012/01/mercedes-benz-transmission-sticks-in.html ----- Transmission not engaging in first gear? http://technoanswers.blogspot.com/2012/01/mercedes-benz-not-engaging-in-first.html ----- Vehicle only goes in First gear?

http://howtobyme.blogspot.com/2011/11/chrysler-pt-cruiser-only-goes-in-first.html

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Car is stuck in park and the shift will not move?

http://howtobyme.blogspot.com/2011/08/car-is-stuck-in-park-and-shift-will-not.html

---- Engine will not go out of park mode? http://technoanswers.blogspot.in/2012/02/2002-nissan-sentra-will-not-go-out-of.html ---- Car stuck in park? http://technoanswers.blogspot.in/2012/02/nissan-sentra-stuck-in-park.html ----- Car will not come out of Park?

http://howtobyme.blogspot.com/2011/11/car-will-not-come-out-of-park.html

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Automatic transmission will not go into high gear?

http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html
--- Car wont downshift sometimes?

http://schematicsdiagram.blogspot.com/2011/12/car-wont-downshift-sometimes.html
---- Transmission will shift into drive?

http://schematicsdiagram.blogspot.com/2011/12/buick-park-avenuetransmission-will.html
----- Auto wont shift from park? http://schematicsdiagram.blogspot.com/2011/12/ford-taurus-wont-shift-from-park.html ---- Car Transmission will not go into Park mode?

http://schematicsdiagram.blogspot.com/2011/12/car-transmission-will-no-go-into-park.html
----- Shift indicator directly goes to 2nd when key is turned ON?

http://schematicsdiagram.blogspot.com/2011/12/shift-indicator-directly-goes-to-2nd.html
---- Third gear missing and engine losing power?

http://schematicsdiagram.blogspot.com/2012/01/third-gear-missing-and-engine-losing.html
------- Vehicle has whining sound in gear?

http://technoanswers.blogspot.com/2012/01/chevrolet-silverado-has-whining-sound.html
----- Hard to shift gears on Manual transmission?

http://technoanswers.blogspot.com/2012/01/hard-to-shift-gears-on-manual.html
------ Car hard shift at slow speeds?

http://technoanswers.blogspot.com/2012/01/car-hard-shift-at-slow-speeds.html
--- Automatic transmission shift lever hard to move on cold mornings?

http://technoanswers.blogspot.com/2012/01/automatic-transmission-shift-lever-hard.html
------ Gear shifts hard?

http://schematicsdiagram.blogspot.in/2012/02/2000-nissan-maxima-shifts-hard.html
------- Vehicle noticed sluggish delayed shifts while driving?

http://schematicsdiagram.blogspot.in/2012/03/vehicle-noticed-sluggish-delayed-shifts.html

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This will help.

Thanks.

CHECK THE LINKAGE TO THE TRANSMISSION THE PUTS IT IN GEAR IT MAY HAVE CAME A LOOSE UNDER NEATH THE CAR

Make sure you car is actually in PARK, Easy to do, Just disengage the parking brake (emergency brake) and attempt to push your car both forward and reverse to ensure your car isnt in neutral. If you cant budge the vehicle your good to go! If it rolls forward it may be in neutral or a forward gear. if it rolls backwards it may be in neutral or reverse. If it rolls both directions its in neutral. On that note if it moves at all skip to the third step (***) and make sure the transmissions shift bracket is in the park possition. Depending on your cars transmission model the parking gear is located all the way left to the farthest possition or all the way right to the farthest possition) One direction will put you in Park, the other in will put you in 1st gear, If your in 1st gear the linkage should be too far away from the shift plate to connect if your column says you are in park. DO NOT ATTEMPT TO START YOUR CAR WHILE IT IS IN A DRIVE GEAR AND THE LINKAGE IS DISCONNECTED IF YOU ARE ABLE TO START YOUR CAR IN ITS CURRENT STATE DO NOT MOVE THE TRANSMISSIONS SHIFT BRACKET UNTIL LATER IN THIS INSTRUCTIONAL!!!!!

* Floor shift automatic, the push pin lever (located inside your shifter/gear stick) may be malfunctioning. You have to pop the grip off and inspect the white plastic pin inside the shaft to see if it is damaged, also check inside the grip while you press the safety release (shift lock button) to ensure the internal slide mechanics are propperly working). Also check for anything obstructing the levers movement inside the floor housing.

** Column Shift. Make sure your pull pin lock is working properly (disengages the shift lock when you pull back the gear shift before you select a gear) if its broke theres two possible behaviors you'll experiance -1. You cant pull the gear shift back at all or -2. No effort or less than normal effot is required to pull back the gear shift. If all that checks out then you have to inspect the steering column linkage bar (you may have to remove some of the steering column housing to view it. Make sure the bar isn't bent or that its movement isnt obstructed.

***Automatic Transmission Linkage Check - Look under the kick panel located above the gas and brake pedals.........Once linkage is located under the dash (kick panel) disconnect it and try the gear shift. If the cable moves under the dash then reconnect it and move on to the next step.
Now block the wheels and climb under the car and disconnect the linkage from the transmission and have someone work the gear shift while you see if the cable is operating propperly, if the linkage moves (as it should) then try shifting the transmission back and fourth by hand while the linkage is disconnected., If the shift bracket feels stiff or is dirty clean it off with non corosive chemicals so you dont damage any seals. If the bracket operates smoother go ahead and reconnect the linkage and try shifting with the column again. Be sure to move the shift bracket back to the park position and make sure your shifter column is in park as well before you reconnect the linkage, if you dont you are sure to run into more issues.

Hope this helps you out! If all the mentioned area's above are in working order then your problem is with the car's transmission and you should take it to a speciallist.

theres a shift cable if its floor model,linkage for column model.

More then likely the cable from the shift lock solenoid that unlocks the shifter is binding up or the shift lock solenoid is sticking..

You need to check the linkage. Under the car, the section that connects the gear shift stick to the transmission rods.