Question about 1993 GMC Sierra

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Transmission seems to shutter in overdrive - 1993 GMC Sierra

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This can be caused by a few things, like bad lockup seloniod or converter or weak trany, the first thing i would try that sometimes works but is a 50/50 shot is a BG trany service, google it to read up on it, it a machine filled with 16 quarts of fluid and start by adding a cleaner into trany and run a few minutes even drive it then hook machine up to lines and start the engine it then begins to remove the old fluid while putting in the new, its like a transfusion, when it done a conditioner is added, i've done a lot of these and some times it help and sometimes it does not, but i would start there, this runs about $150.00, good luck and hope this helps,

Posted on Sep 04, 2010

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Related Questions:

1 Answer

Overdrive shutters back an forth also feel same when shifting 2nd to 3rd worse when fuel is applied


look at fluid levels and color of fluid.. if brown instead of reddish take to transmission service and do fluid and filter change..may have a clogged filter..

Dec 15, 2013 | 2000 Ford Econoline

1 Answer

I have a 2006 Ford Expedition 5.4L engine and vehicle surges or shutters in overdrive only.


It can easily be the aftermarket equipment, you can call them. Since no trouble lights are on, just ask at Autozone or another good store and see what they show for a downshift solenoid and a converter lock-up solenoid and where they are located.

Another great source, keeping in mind that an Expedition is similar to an F150, are the Blogs. I believe a site like F150Owners.com or F150OwnersBlog.com have many owners using the same performance equipment you have. Some 4x4 sites are heavy into aftermarket modifications.

Also have your engine checked for "Camshaft Phasers" which can cause "bucking" under different engine loads. There was a Recall about these parts. In short, each engine head has a Camshaft. It is a variable timing camshaft. When 1 side does not match the other, there are problems.

I hope my solution is helpful.

Mar 03, 2012 | 2006 Ford Expedition

1 Answer

My ford F150 won't shift from 2nd to 3rd. Does anyone know what could be the issue?


Usually the transmission needs to be rebuilt in that situation. It's a very common problem if that's the famous automatic overdrive transmsission. AOD I have had three trucks that have done that. It usually starts by shuttering when it shifts and than finally goes out. Sometimes the Lucas transmission treatment gives you a little more time, but it sounds too late for yours. From what I understand (mechanic told me) that when the overdrive goes out, it takes third gear with it. If you drive in hilly areas, that overdrive is shifting in and out all the time as you go up and down hills and wears it out. My Dad had that hapen on his F150 and he replaced his transmission with a junk yard transmission that turned out to have the same problem. I had that transmission replaced with a Jasper rebuilt and it worked great. I think it was $1300 for the rebuilt trans with the old one core trade in. I think when 3rd gear goes out, you can only go about 45mph without over reving the engine. I saw that same problem with a Ford Crown vic with that same transmission and 302 engine that my neighbor had.
Did your third gear just go out all of a sudden or were you getting like a shuttering or kind of a grinding sound when it shifted?

Aug 05, 2011 | 1998 Ford F150 Regular Cab

1 Answer

2000 Chevy Impala 3.8L- While driving at a constant speed the transmission will shutter or flutter between RPM's. If I back off the gas, the shuttering will stop likewise if I step it down, shuttering...


If it does it only at highway speeds...over 40 mph or so....you could have a lock up torque converter issue. (This locks up electrically for overdrive) Dissable the overdrive and see if it will go away. (drive it in 3rd, if you have a 4 speed) (Or tap the brake, this will dissable it also)

Aug 05, 2011 | 2000 Chevrolet Impala

1 Answer

My transmission seems to hesitate at 30-40mph then it smoothes out have changed the fluid and this is still going on could you please give me some kind of clue what this could be ?


Does this happen with the overdrive off or on? If it happens with the overdrive on, then suggest you try it without the overdrive and see if your indications change. The overdrive normally starts to operate in that range. While both are transmission problems the overdrive isn't as hard to repair.

Jun 24, 2011 | 2001 Lincoln Town Car

1 Answer

The car runs perfect for 10 - 15 min then all of a sudden when i take off from a stop first and second gear shutter or slip and it gets stuck in 3rd gear. So I shut the car off resett the computer and it...


if it has overdrive transmission the torque convertor has a vein broke inside causing shudder replace torque convertor.
the torque conver does the overdrive when it hits a certain rpm it upshifts to overdrive in torque convertor.
with vein broke it hrows it out of balance causing it to shudder and possibly slip.

Jun 22, 2010 | 1997 Dodge Intrepid

2 Answers

1992 Buick Lesabre with 43,000 miles occasionally the transmission will shutter when I accelerate and it tries to downshift from overdrive to 3rd gear,


Sounds like the valves in the valve body are sticking,and maybe a lock up converter.Try this brand ,lube guard,for transmissions,it can be found at napa auto parts,it is the beat,and will most likely fix the problem,it is for transmission shutter.

Jan 26, 2010 | 1992 Buick LeSabre

1 Answer

Transmission shifts ony 123 no overdrive, it slip in overdrive


sorry to say this trans has to be removed and rebuilt seems like od clutches burnt out-do you tow heavy trailer with truck as you have to tow with od off(push button on shifter)

Oct 05, 2009 | 2001 Ford F150 Styleside SuperCrew

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