2002 Chevrolet Monte Carlo Logo
Katie Riley Thorington Posted on Dec 06, 2010
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My car will occasionally shift hard. after parked for about 30 minutes it won't do it again for a couple of days.

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Harvey N Tawatao

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  • Chevrolet Master 3,854 Answers
  • Posted on Dec 06, 2010
Harvey N Tawatao
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Have your transmission serviced and pressure test the transmission line. It sounds like the EPC (electronic Pressure Control) valve is starting to fail. Once the EPC valve fails, the transmission will default to the highest pressure and hard parts will eventually break. Easy fix in pan. Fix as soon as possible.

If your lucky it's going to be your TPS, Check TPS for smooth and linear electrical response over the entire range of motion. If not, replace. TPS (Throttle Position Sensor)

Thank you for using fixya and good luck.

Testimonial: "Very fast answer. Thanks!!!"

  • edub08 Mar 08, 2011

    I've been having the same problem with mine I was told to get my computer flashed....hadn't had the chance to do it yet.

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Jonah Oneal

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  • Chevrolet Master 14,092 Answers
  • Posted on Oct 23, 2011
Jonah Oneal
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WELL IF YOU SEE CHECK ENGINE LIGHT FLASHING CODE SCAN FOR TRANSMISSION FAULT CODES.IF YOU SEE NO CHECK ENGINE LIGHT FLASHING, TRANSMISSION FLUID OLD DIRTY CONTAMINATED. CAUSING SHIFT VALVES TO STICK. ALL MY GM TRANSMISSION I KEPT FLUID CHANGE AND ADD SOME TRANSMISSION ADDITIVES KEEP TRANSMISSION TO KEEP VALVES IN BODY TO MOVE FREELY CAUSING TRANSMISSION SHIFT SMOOTHLY.

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Related Questions:

0helpful
2answers

My 2008 Chevy impala will not come out of park

The
shifter needs to be inspected. Its quite possible that The
shifter assembly is got misaligned, it has to be open and realign.








There
are many other possibilities. But if it was working right up till now and
suddenly this shifting problem occurred then its shifter
assembly alignment issue.




Also
i suggest you to refer these gear shift issues, which are mostly noticed. These
are direct links with appropriate solutions to
the specific problems of gear shift


















GEAR SHIFT ISSUES








Gear
indicator Shows "3" Instead Of "D"?


http://whoisbyme.blogspot.in/2012/07/gear-indicator-shows-3-instead-of-d.html

---------

2006 Chrysler 300c: Shifter Stuck in Park?

http://technoanswers.blogspot.in/2012/06/2006-chrysler-300c-shifter-stuck-in.html

----------

1998 Ford Expedition: Will not Shift Out of
Park?


http://schematicsdiagram.blogspot.in/2012/06/1998-ford-expedition-will-not-shift-out.html

---------

Car will not move when in gear?

http://repairhelpcenter.blogspot.in/2012/02/car-will-not-move-when-in-gear.html

-----------

Mercedes-Benz transmission sticks in first gear?

http://technoanswers.blogspot.com/2012/01/mercedes-benz-transmission-sticks-in.html

----------

Mercedes Benz not engaging in first gear?

http://technoanswers.blogspot.com/2012/01/mercedes-benz-not-engaging-in-first.html

----------

Chrysler PT Cruiser only goes in First gear?


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







----------



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


-------

2007 Ford Expedition: How to shift car in neutral with Dead Battery

http://www.howtorepairguide.com/2012/11/2007-ford-expedition-how-to-shift-car.html

--------

2002 Nissan sentra will not go out of park mode?

http://technoanswers.blogspot.in/2012/02/2002-nissan-sentra-will-not-go-out-of.html

--------

Nissan Sentra 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


-----------

Automatic transmission will not go into high
gear?



http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html



----------


Car won\'t downshift sometimes?


http://schematicsdiagram.blogspot.com/2011/12/car-wont-downshift-sometimes.html


--------

Buick Park Avenue: Transmission will
Not shift into drive?



http://schematicsdiagram.blogspot.com/2011/12/buick-park-avenuetransmission-will.html


------------

No
First gear Starts In Second Gear


http://www.howtobyme.blogspot.com/2012/07/no-first-gear-starts-in-second-gear.html

-------

Ford Taurus won\'t shift from park?

http://schematicsdiagram.blogspot.com/2011/12/ford-taurus-wont-shift-from-park.html

---------

2006 Ford F150: Will Not Shift out Of Park?

http://technoanswers.blogspot.in/2012/06/2006-ford-f150-will-not-shift-out-of.html

--------

Car Transmission will not go into Park mode?


http://schematicsdiagram.blogspot.com/2011/12/car-transmission-will-no-go-into-park.html


----------

1998 Chrysler Voyager: Transmission Problem?

http://howtobyme.blogspot.in/2012/06/1998-chrysler-voyager-transmission.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


--------

Chevrolet silverado has whining sound in gear?


http://technoanswers.blogspot.com/2012/01/chevrolet-silverado-has-whining-sound.html


----------

2002 Chevrolet Avalanche Z71: Gear shift
Issue?


http://whoisbyme.blogspot.in/2012/06/2002-chevrolet-avalanche-z71-gear-shift.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


---------

Transmission-Hard To Down Shift

http://technoanswers.blogspot.in/2012/07/transmission-hard-to-down-shift.html

---------

Automatic transmission shift lever hard to move on cold
mornings?



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


------------

2000 Nissan maxima 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



-------


2007 Hyundai Santa Fe: Will not Shift out of
Park Mode?





http://schematicsdiagram.blogspot.in/2012/06/2007-hyundai-santa-fe-will-not-shift.html







These details will help.



Thanks.
0helpful
1answer

94 toyota is over 3000 rpm at 40 mph

It can be the issue with Transmission or problem with gear shift assembly.The system has to be inspected and tested.----------
For complete step by step troubleshooting,click the solved help links with complete solution for such various solutions.

Click the link below:----
---------
Gear indicator Shows "3" Instead Of "D"? http://whoisbyme.blogspot.in/2012/07/gear-indicator-shows-3-instead-of-d.html
-------------- 2006 Chrysler 300c: Shifter Stuck in Park? http://technoanswers.blogspot.in/2012/06/2006-chrysler-300c-shifter-stuck-in.html
------------ 1998 Ford Expedition: Will not Shift Out of Park? http://schematicsdiagram.blogspot.in/2012/06/1998-ford-expedition-will-not-shift-out.html
------------ Car will not move when in gear?


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

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

-------------

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

-----------
2002 Nissan sentra will not go out of park mode? http://technoanswers.blogspot.in/2012/02/2002-nissan-sentra-will-not-go-out-of.html
-------- Nissan Sentra 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

----------
Automatic transmission will not go into high gear?

http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html

-------------
Car won't downshift sometimes?

http://schematicsdiagram.blogspot.com/2011/12/car-wont-downshift-sometimes.html

----------
Buick Park Avenue: Transmission will Not shift into drive?

http://schematicsdiagram.blogspot.com/2011/12/buick-park-avenuetransmission-will.html

-------
No First gear Starts In Second Gear http://www.howtobyme.blogspot.com/2012/07/no-first-gear-starts-in-second-gear.html
---------- Ford Taurus won't shift from park? http://schematicsdiagram.blogspot.com/2011/12/ford-taurus-wont-shift-from-park.html
----------- 2006 Ford F150: Will Not Shift out Of Park? http://technoanswers.blogspot.in/2012/06/2006-ford-f150-will-not-shift-out-of.html
----------- Car Transmission will not go into Park mode?

http://schematicsdiagram.blogspot.com/2011/12/car-transmission-will-no-go-into-park.html

---------
1998 Chrysler Voyager: Transmission Problem? http://howtobyme.blogspot.in/2012/06/1998-chrysler-voyager-transmission.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

--------
Chevrolet silverado has whining sound in gear?

http://technoanswers.blogspot.com/2012/01/chevrolet-silverado-has-whining-sound.html

----------
2002 Chevrolet Avalanche Z71: Gear shift Issue? http://whoisbyme.blogspot.in/2012/06/2002-chevrolet-avalanche-z71-gear-shift.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
---------- Transmission-Hard To Down Shift http://technoanswers.blogspot.in/2012/07/transmission-hard-to-down-shift.html
--------- Automatic transmission shift lever hard to move on cold mornings?

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

--------
2000 Nissan maxima 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

----------
2007 Hyundai Santa Fe: Will not Shift out of Park Mode? http://schematicsdiagram.blogspot.in/2012/06/2007-hyundai-santa-fe-will-not-shift.html

---------
These details will help.
Thanks.

0helpful
1answer

Why my 2007 police crown Vic won't shift out of

All 2000 and up vehicles utilize a Solenoid which is powered by depressing the Brake Pedal to allow the Shift Lever to be move from Park to any other position. Is the Shift Lever located on the Steering Column or the Floor? In either case typically the Solenoids used by Ford do occasionally go bad. I highly recommend having a certified technician replace the solenoid.
0helpful
1answer

It started with the loss of my cruise control. I had no problems with shifting out of park. Came home put the car in to reverse and shut it down. 30 minutes later, started the car, I can move the lever...

Sounds like the cable from the shift lever to the transmission has broken or come loose. You may have to get it towed in to a dealer to have it fixed.
0helpful
1answer

My grand Marquis won't shift into park but it goes

My Grand Marquis shift indicator offset. Car was stuck in reverse/neutral/drive. Had to take the bottom of dash apart where pedals are and tighten a couple of torx screws.
0helpful
1answer

Engine only cranks at times but doesn't start for a few minutes.

There is is something called a pgmi relay that goes bad. Its under the dash, left of the column. It is rectangular, and says pgmi on it. It is fairly expensive. Can only get it from Honda.
0helpful
1answer

2002 xtype won't start, very hard to shift into gear

reset your computer by removing the positive battery cable for 10 mins, this will reset the computer and take out any codes or defaults.
0helpful
1answer

Monte carlo

You need to rebuild the transmission,it's over heating. May want to check your transmission cooler first .
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