Question about 2003 Chevrolet Impala

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2003 Chevy Impala when going uphill transmission doesn't shift when giving gas. You have to let off gas for car to shift.

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Start with the simple and check your transmission fluid and then check your TPS (throttle position sensor) Check TPS for smooth and linear electrical response over the entire range of motion. If not, replace.
Thank you for using fixya and good luck

Posted on Jun 02, 2010

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Posted on Jan 02, 2017

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I have a 2003 chevy impala and my car doesn't


Click this link below and follow the details,to troubleshoot the problem.:--

http://technoanswers.blogspot.in/2012/02/car-starting-issues.html

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My 2005 chevy impala started jerking and then it wouldnt chnage gears unless i press the gas all the way to the floor is it the transmission?


no on 05 chevy the transmisson shift is control by vacume look for a vacume line that is dry rooted or has come off start at the engine first then work the way down to the transmisson. a line off or dry rotted any where in the syastem will give you a hard shift sometiimes like a hard jerking motion when
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I need to change the transmission modulator valve on a 2003 Chevy Impala. I need help with the location of the valve and even steps on how to change it. Thanks


Hello, the 2003 impala's dont have a transmission modulator valve. this transmission is electronic controlled by the power train control module. the transmission uses a pressure control sol. inside the transmission instead of a vac. operated modulator valve. if you are having a late harsh shifting problem, this would be more in the area of a pressure control sol. at fault

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My 2003 chevy impala isn't shifting properly


It is possible that it is a cat problem, or o2 sensors. Though your car's engine light should be coming on if that's the case. How reliable are your mechanics? If you didnt have any problems before the car went in. Then most likely they installed or reinstalled something incorrectly. Also how many miles are on the vehicle?
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Sep 08, 2009 | 2003 Chevrolet Impala

1 Answer

When I accelerate my 2003 chevy impala the rpm shoot up


Tranny not shifting into overdrive properly, try having the filter changed and the tranny flushed this should help.

Sep 06, 2009 | 2003 Chevrolet Impala

2 Answers

2003 Chevy Impala transmission


Did you have it serviced or rebuilt, If you had it rebuilt I would take it back to the trans shop for warranty repairs.
If they just changed the trans filter I don't think it would cause your problem.You just have bad luck with the slipping trans

Jul 25, 2009 | 2003 Chevrolet Impala

1 Answer

I have 2003 chevy impala the transmission starts shifting hard after the car is up to operating temp.sometimes you can turn it off and start it again and it will stop that for a little while.


Have the vehicle scanned. If you have a code in the computer for maximum adapt/ long shift, replace the EPC pressure control solenoid. This a real common problem on the 4t65e transmission.

Mar 06, 2009 | 2003 Chevrolet Impala

1 Answer

Shift lever 2003 chevy Impala


sounds like that the position cable is seizing up seek WD 40 service perhaps !!

Oct 28, 2008 | 2003 Chevrolet Impala

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