Question about 1999 Buick Park Avenue

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Transmission will not shift into overdrive and cruise will not work and check engine light came on all at once

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Posted on Jul 29, 2009

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Transmission on 2008 automatic will not shift to overdrive, cruise control will not turn on


Usually when the check engine light is on the car will not go into overdrive Use a scan tool to retrive the codes first and repair problems related to the codes Clear the codes then see if you still have trouble with overdrive

Jul 16, 2014 | 2008 Chevrolet Chevrolet Malibu Classic LS

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Slow shift into overdrive


No, the 2 problems are not related, the SAI pump has no function while driving. Do not "flush" your transmission unless you want problems. Just change the filter and replace fluid with Dexron 6. Many people have had tranny problems with our platform after a full "flush". Your throttle position sensor may have problems, have it checked out for the shifting issues. Remember, the TPS is attached to the throttle body, not removable. Must replace whole throttle body, IF that's your issue.

May 16, 2017 | 2005 Chevrolet TrailBlazer

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I have a 95 f250 powerstroke diesel, automatic, since yesterday the transmission has been slipping between 3rd and overdrive. the problem started while hauling a fairly light horse trailer and the...


You should not use overdrive unless you are steadily going highway speeds. I had one of those and my ex liked to use cruise control on windy coastal roads. This caused it to shift back and forth from 3rd to overdrive constantly. So I disconnected the cruise control so he couldn't use it. Lol. I'm not suggesting this for you. You should keep overdrive off for now and have your transmission serviced. New filter & oil & flush the cooler. Make sure you ONLY USE THE RECOMMENDED FLUIDS!!!!!!!!!! See if that helps. Do not use overdrive pulling a trailer and going up a hill and do not use it if you are on windy roads where you are slowing down alot of times. Try letting off the gas for a second when you do want to engage the overdrive. Remember to always check your automatic tranny fluid with the engine running and fully warmed up.

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What does it mean when the O/D off come on


This is the "overdrive" on or off indicator light. When it says "OD off", means that overdrive is off and transmission is in 3rd gear. When it's "on" then transmission will shift into 4th gear or "Overdrive". The engine will turn slower using less fuel for better economy.

Feb 02, 2011 | 1991 Toyota Corolla

1 Answer

Transmission doesnt shift into overdrive


Does the cruise work? is the check engine light off when driving? Does the overdrive off light come on and go out as you push the button on the gearshift? Does the speedometer work normally? Any of these things can make it not go into high gear. Does the gearshft work smoothly and seem to be in the correct gear? Are the motormounts good enought that the engine doesn't rock around too much and pull on the cable? Their's a few electrical connectors connected to the transmission, are they connected and not leaking oil and worn or damaged. Most of the time this problem can be solved by carefully looking over these things and you'll find some asquew. If not and the check engine light or overdrive off light is'nt on the there's transmission troble and you need to show up for your free roadtest at a transmission shop and listen to what they have to say. If it sounds reasonable and straight forward do it it it sounds like thier guessing take it somewhere else. Your Cadillac dealer will be right but they may build up a strong bill before they fix the car. and want still more to do the repairs.

Dec 05, 2010 | 1998 Cadillac Catera

1 Answer

Blinking overdrive light , not shifting


Have the vehicle scanned.The overdrive light is like the check engine light for the transmission. There are transmission codes in the ecm if the overdrive light is blinking.

Mar 27, 2010 | 2002 Ford Explorer Sport Trac

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Overdrive light on shifter is flashing and


There is another recall on the cruise control. The first added a fuse. This new recall is about wiring and lighting problems caused by the cruise. Everything from not shifting out of Park to no brake lights to false dash indicators. Best to contact the dealer, if it is a recall its free.

Dec 04, 2009 | 2004 Ford F150

1 Answer

Fixed check engine trouble code but light with same code comes on


Your transmission problem could be related to the TPS sensor. The TPS sensor indicated to the PCM when and what gear the transmission should be in. As for the Lucas and other additives to the transmission may be doing it more harm then good, As the transmission oil is thicker, the transmission line pressure increases. The PCM try's to compensate for that by letting the converter lock up clutch to slip and the fluid retention in the solenoid to change gears stick causing it to shudder between gear shifts. Recap, Check the TPS sensor readings and the Wire Harness. Look for loose connections and corrosion that may not be giving the proper readings to the ECM. Rescan the car for any DTC codes and most transmission chop can do that for you if your going to get it serviced there anyways. Have the transmission fluid flushed and filter changed, and have them do a transmission line pressure checked, there are additives out there to keep the fluid from foaming which is ok, but changing the fluid's weigh can cause transmission failure. Good luck and hope this helps and keep me posted, be glad to help.

Jun 14, 2009 | 1995 Buick LeSabre

2 Answers

Transmission-overdrive not working properly


check the transmission fluid first .
============
overdrive allows the engine to run at lower RPM's , which increases the fuel
economy and also the transmission runs cooler

Dec 15, 2008 | 1989 Ford Ranger

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