Question about 2003 Chevrolet Monte Carlo

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Did a fluid change and treatment on a 2003 monte carlo

Still get hard shifts and it is very periodic only happpens maybe every other day any thing that could cause this i have a heater core leak t the moment could that possibly have anythimg to do with it

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Are you serious? Why would you even mention a heater core leak in regard to a transmission shift issue?

You need to know what items determine shift stratagy to solve this.

eg: TPS Sensor, Various Trans Sensors and Solenoids Etc.

Posted on Apr 30, 2010

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1 Answer

Transmission problems


Could be fluid/filter but also could be shift solenoid/governer.

Nov 17, 2013 | 2005 Chevrolet Monte Carlo

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Code P1870 for a 1996 Chevrolet Monte Carlo Z34 3.4 litre


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Jul 06, 2012 | 1996 Chevrolet Monte Carlo

1 Answer

My monte carlo is shifting hard


my 2003 had the same problem it turned out to be the shift selinoids, in the trans, shop wanted $700 bucks to fix,you need to see if it is the same problem and get fixed now before you cause damage to the trans. my son and i did them, it was quit a job and around $150 bucks cost (selinoids and fluid and there was a seal in the pan for the axel also,the pan gasket may be able to be resued its metal with ruber inserts) we had to drop the engine and trans cradle and remove the wheel and axel to get to the side trans. pan off and the selinoids only took 5 mins to change, and put back together,most of the labor was in time spent getting to them apart and back together,this solved the problem and trans has been fine ever since, ( FIRST thing we did ) changed trans fluid before we did the selenoids in hopes that would fix it but ti did'nt so we then did the above work after the fluid change just and added cost, i would take your car to a shop and see what they say first,my car did not show any codes when i had this problem,it now has 155,000 miles and no trans problems. hope this points you in the right direction.

Sep 11, 2011 | 2004 Chevrolet Monte Carlo

1 Answer

I have a 1985 monte carlo ss, lately the transmission has been shifting smoother than normal but at higher rpms, it used to shift a little rugged but at the correct rpms, what kind of problem am i looking...


The transmission used in that car usually has a firm positive shift. (rugged?) If the shifting seems to be smoother, could be that you have a small amount of internal pressure loss from worn seals.
Only two options there. You can try changing the fluid and adding a good additive like lucas sealer and conditioner and see if it comes back to normal after a few days, or, have the unit checked by a reputable trans shop, They will likely rebuild it. Changing internal seals requires complete teardown so it is foolish to only replace them without changing the clutch packs.

Mar 11, 2011 | 1985 Chevrolet Monte Carlo

1 Answer

2003 monte carlo whining noise and hard shifts


Transmission. Check fluid level using proper checking procedure, which is usually get to operating temperature (take it for a short drive), park it in neutral idling, parking brake on. Fluid should be at correct level, and red in color. Anything else, have a transmission flush and fill, do the filter as well, just to be safe. It's a good place to start. And hopefully you don;t have bigger problems. Hope this helps.

Apr 23, 2010 | 2003 Chevrolet Monte Carlo

1 Answer

Hard shifting from 1st to 2nd


I have been hearing a possible solution for this problem is changing the oil filter in the trans oil pan. But ive been looking all over for a solutionand thats the only legit one ive found. It said when the oil gets clogged it doesnt flow to the transmission as nicely as normal therefore leading to lagging changes

Mar 21, 2010 | 2003 Chevrolet Monte Carlo

1 Answer

Transmission shifts hard sometimes


has the fluid and the filter in the trans ever been changed? this should be done every 60,000 miles, if it is overdue it can cause shifting problems.

Dec 01, 2009 | 2005 Chevrolet Monte Carlo

2 Answers

Seems to stick in 1st and 2nd gear


First signs of the trans going out. rebuild or replace.

Jul 02, 2009 | 2003 Chevrolet Monte Carlo

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