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Hard downshift on 2003 cadillac cts. When I coast the car without breaking the car jerks as it passes 20mph and 15 mph. It also happens when I gas the car. It feels like i'm running something over

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Actually you have to change transmission fluid every 75000 miles and this car have a dip stick it on the transmission pan you seek the professional help because they need to replaced the filter also and do the flash for bather performance

Posted on Dec 05, 2012

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Posted on Jan 02, 2017

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SOURCE: Cadillac Deville 2000- Engine check light code P0741

If you like go ahead and let someone sell and replace your transmission but here is my suggestion! Check around and see if you can find a minor vacuum leak! This can simply be the big round hose that goes from the fuel injection to the power brake hub! This is normally a push in connector which has about a 1/2 inch hose clamped on it! If there is any kink or the connector is not in correctly a leak will occur and the transmission will shift rough as though you will be thrown out of the vehicle! Try unplugging this connector and plug it back in hard and straight and maybe you will be lucky and fix your problem. If the vacuum is correct your transmission will shift better than you have ever experienced!

Posted on Aug 16, 2009

  • 2101 Answers

SOURCE: jerking when applying breaks

first make sure you replace the right ****** fluid ,which is chrysler +4 and see if the help out

Posted on Oct 29, 2012

  • 2004 Answers

SOURCE: check engine light comes on and car starts to downshift hard

Please take the car for a scan to reveal any problem/ error codes causing this.

Good luck,

Posted on Jul 15, 2009

SOURCE: My check engine light came on when I was driving

You have a check light on

What Codes if any ,do you have

Have to start with trouble code issues
& resolve them first. Been that way since 1980
some 31 years

Posted on Jul 22, 2011

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