Question about 2002 Buick Century

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Transmission wont shift after 2nd gear

Ok bought this car a while ago with a transmission problem would not shift into third gear ,,so we changed the transmisson out with a newer one and we still have the same problem,,it goes into 1st gear and then shifts to 2nd gear just fine .its when its trying to shift into 3rd gear the problem happens ,it will not shift in to 3rd or overdrive just high rpms and no shift .is there any modules or fuses or solenoids thats external that woulkd cause this kind of problem

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  • jason merritt Apr 25, 2013

    could use some help thank you



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I wouldn't think that two transmissions would have the same bad 2-3 shift solenoid . Probably a wiring problem or the driver (transistor ) in side the control module . Do you know how to do automotive electrical testing ? Find the PCM - powertrain control module , then looking at a wiring diagram find the circuit from the PCM to the transmission wiring connector . An check the circuit ! Free wiring diagrams at Enter vehicle info. year , make , model and engine size . Under system click on transmission/ transaxle , subsystem transmission controls . Click the search button then the blue link .The first diagram shows 2-3 shift solenoid electrical circuit from PCM connector 2 - pin 44 to the trans. connector - C 113 pin B . Check for a open in the wire ,if no open check to see if the PCM driver is supplying a ground . Videos on youtube show how to test this .
How to test computer transistor driver without scan tool

Posted on Jun 10, 2017


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Posted on Jan 02, 2017


michael billington

  • 334 Answers

SOURCE: transmission slipping

you may have a bad sencer in the tran take it to a well nown tran shop and have them run a scan on it. to be truthful i pretty shore your tran is on its way out.

Posted on Apr 12, 2009

robert rusiniak

  • 124 Answers

SOURCE: goes into neutral and then shifts hard into 1st on slowdown

It sounds like your input clutch seals are rolling. Is the check engine light on. It could also be the pressure control solenoid could be causing the problem aswell

Posted on Sep 04, 2009



  • 3113 Answers

SOURCE: 2000 buick lesabre transmission - high rpm's in 1st to 2nd gear

SHift solenoid pressure switch

Posted on Jun 06, 2010

Carl Kay

  • 827 Answers

SOURCE: I have a 1992 Buick Reviera that won't shift into

you will need to replace the 3-4 shift solenoid inside the tranny - either it works or doesn't - alternatively it could be the wire... not a big deal, but the shops charge for that..

Posted on Mar 06, 2011

Bill Boyd

  • 53757 Answers

SOURCE: my 02 buick transmission is not shifting

check for sift solenoid fault. Have a fault code read. Talk to a tranny specialist as it may be a common fault.

Posted on Apr 26, 2013

Testimonial: "the first transmission was putting off a solenoid b code and we took that trans out and tested the solenoid b and it worked fine ,,and now the new trans is saying solenoid A not working ? just dont make cents to me ,,,2 diff trans haviing the same problem ..."

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