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Chevrolet transmissions & drivetrains repair questions and answers

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  • mbieman
    mbieman - 1996 Chevrolet K2500 - Transmissions & Drivetrains - 9/14/2013
    Intermittent clutch problem
    cold and warm clutch problem after truck has been shut off it will sometimes lock in gear and not want to shift out of gear. If I leave it, it will then work fine for a while until the vehicle is turned off.
     
  • jackcasseday
    jackcasseday - 1985 Chevrolet Corvette - Transmissions & Drivetrains - 9/14/2013
    How do I know a transmission will be compatible?
    I am looking to purchase a project car. It is a Datsun sitting on a corvette chassis, with a chevy v8 in it. Right now it doesn't have a transmission, and i just want to make sure I buy a transmission that will work with it. Would just a doug nash 4+3 work with it? ...
     
    • John's Auto Repair
      9/14/2013 John's Auto Repair
      Chevy V-8 has different bolt pattern than rest of G.M. A 400 trans. is good if your looking for
      an automatic.
  • hburns111
    hburns111 - 2001 Chevrolet Malibu - Transmissions & Drivetrains - 9/13/2013
    Car starts and runs fine- shifts into drive fine but won't move when I give gas. Same problem with reverse.
    Car has 95,000 miles, recently inspected w/o problem except rear light panel changed. This just happened out of the blue and was running fine. No warning lights appear.
     
    • CVO
      9/13/2013 CVO
      Check the transmission fluid and the shift linkages, if they appear in order, then the forward and reverse planetary gear sets quit.

      Visit this site and see the planetary gear set. http://www.transmissioncenter.net/
      Scroll the screen almost to the bottom and you will see a planetary gear, it looks alike to a pencil rotating sharpener.
  • jackcasseday
    jackcasseday - 1985 Chevrolet Corvette - Transmissions & Drivetrains - 9/10/2013
    How do I know a transmission will be compatible?
    I am looking to purchase a project car. It is a Datsun sitting on a corvette chassis, with a chevy v8 in it. Right now it doesn't have a transmission, and i just want to make sure I buy a transmission that will work with it. Would just a doug nash 4+3 work with it? ...
     
    0 answer
  • wvwoodchuck
    wvwoodchuck - 1994 Chevrolet S10 Blazer - Transmissions & Drivetrains - 9/9/2013
    electronic 4 wd switching.4 wd doesn't engage when switch is pressed.
    nothing happens when I push 4 wd switch. Have changed switch in dash, vacuum actuator and transfer case switch. What else is there?
     
    0 answer
  • wbn3535
    wbn3535 - 1986 Chevrolet G20 - Transmissions & Drivetrains - 9/8/2013
    What does the transmission module valve do
    transmission hesitates to go in gear
     
    • CVO
      9/7/2013 CVO
      The transmission module description.
      What It does is makes it change gears at certain times,this is done by using vacuum from the engine to control the valve body,and when it goes bad you,ll know it,it wont change gears good ,and it may pull transmission fluid in from it and burn it through the engine also,this will create a white smoke from it,but it will not change gears right you may also notice a slight miss-fire at idle because of it being bad or a higher idle,those are the most common symptoms of a bad one.
      Check the transmission fluid, and make sure it has a proper level after the engine is warm up.
    • bear.1216
      9/8/2013 bear.1216
      The modulator valve uses engine vacuum to determine engine load and adjust shift points. This means under heavy acceleration it will shift later. The modulator only affects upshifting and downshifting between forward gears. Does not affect park or neutral to drive or reverse. If you are having delayed engagement of trans from park to reverse or neutral to drive this is not the problem. Instead I would suspect low fluid level or plugged trans filter.
  • ash.hale1994
    ash.hale1994 - 1992 Chevrolet Camaro - Transmissions & Drivetrains - 9/7/2013
    Trouble with my baby :( please help!
    My Camaro has about 179,000 miles on it, and was fine up until about a month ago. It died on me at a stop sign, and when I tried to start it again the first time, a greyish white smoke came out of the front driver side under the hood. It started up fine on the ...
     
    • bear.1216
      9/7/2013 bear.1216
      Check the wiring at the starter. The smoke you mentioned may have been sparks from the starter wires. If the starter wires are melted and arcing or badly corroded this would cause some of your issues.
  • alexgiron60
    alexgiron60 - 1996 Chevrolet Tahoe - Transmissions & Drivetrains - 9/4/2013
    When I shift into reverse it starts making a high pitch rubbing sound in drive it starts after speed increases
    does not do it until shift in reverse and after speed increase well in drive did not start till recently under vehicle in middle not under motor fluids are ok and no leaks
     
    • bear.1216
      9/4/2013 bear.1216
      Here is a good place to start. Inspect the drive shaft. Put rear axle on jack stands and check driveshaft u-joints for play or binding. You can also spin rear differential and rear tires to check for noise. You should eliminate rear driveshaft and axle problems before suspecting transmission or transfer case issues.
  • dom128
    dom128 - 2005 Chevrolet Trailblazer - Transmissions & Drivetrains - 8/31/2013
    When my car goes up hills it looses power and wont shift properly. what could be the problem
    my vehicle has over 100,000 miles. It has had oil change, tune up, up stream sensor changed, new feul pump and exhaust checked. It looses power and won't shift going up hills every time its driven.
     
    • frankiedonnn
      8/31/2013 frankiedonnn
      It could be the tranny and not the engine.It sounds like the kick-down solinoid is not functioning . A scan for fault-codes may help. It may not be changing down under load like it is suppose to .
  • videogem
    videogem - 1995 Chevrolet Beretta - Transmissions & Drivetrains - 8/29/2013
    Transmission shifts into 1st & 2nd but will not shift into drive or overdrive, transmission starts whining
    fluid & filter has been changed, hoses checked, axle & bearings replaced!
     
    • frankiedonnn
      8/29/2013 frankiedonnn
      Hi videogem, It may help to do a scan for trouble codes ,which are available for free at Auto zone ,Napa etc. : a scan will reveal if it is a solinoid problem. But I also learned that some times when transmissions have fluid changes or flushes it can cause this kind of a problem if the bands are already damaged. It happened to me years ago : I had the fluid in a grand caravan trans. changed and after that it stuck in the low gears ,so I had to replace the trannny. I hope it is a better turn out for you, however.
      frankiedonnn
      8/29/2013 videogem
      Ty Frankie but problem started before fluid & filter were changed!
      frankiedonnn
      8/29/2013 frankiedonnn
      Hi videogem, In that case then go ahead and scan for trouble codes .It is probably a solinoid then, the question is which one.
  • dfrmngtn015
    dfrmngtn015 - 1980 Chevrolet Corvette - Transmissions & Drivetrains - 8/27/2013
    Rear end clicks when stopping after stop it lock up then lets go
    it feels like a brake so put brakes on it, trailing arms (2) both sides still dose it
     
    0 answer
  • cshreve
    cshreve - 2006 Chevrolet Uplander - Transmissions & Drivetrains - 8/27/2013
    Transmission lurches in first gear
    79,000 miles. The trans lurches when starting from a stop. No engine light
     
    • wbrockstar
      8/27/2013 wbrockstar
      Its normally caused from a malfunctioning shift solenoid.Unless something in the engine management or ignition system is causing a surge,which sometimes feels like its in the tranny instead.Faulty iac valve is one part that causes this type of surge
  • andysla58
    andysla58 - 2007 Chevrolet Impala - Transmissions & Drivetrains - 8/17/2013
    Can't shift out of park.
    with key on and foot on brake it will not shift out of park.
     
    • CVO
      8/16/2013 CVO
      If the brake pedal is pressed, then the stop lights must be on. Replace the brake switch if the lights aren't on.

      Stoplight switch directs current to the stop lights, cruise control, and shift interlock to turn them on or off
      When not replaced, stop lights will run continually or not function, potentially causing premature bulb failure, safety issues and/or the transmission will not shift out of park
    • wbrockstar
      8/17/2013 wbrockstar
      This is a common issue with impalas.Remove the 7mm bolts holding the center(shifter)console to the floor.You might be able to lift the pass side of console up,but if not remove the whole console.There you will find a lil wiring harness with 2 wires that plugs into to a solenoid.Those wires are so small that they sometimes break or pull loose from the harness.Repair this wiring issue if there is one.If not,the solenoid its plugged into is the problem and youll need to replace it
  • ash.hale1994
    ash.hale1994 - 1992 Chevrolet Camaro - Transmissions & Drivetrains - 8/16/2013
    Trouble with my baby :( please help!
    My Camaro has about 179,000 miles on it, and was fine up until about a month ago. It died on me at a stop sign, and when I tried to start it again the first time, a greyish white smoke came out of the front driver side under the hood. It started up fine on the ...
     
    • wbrockstar
      8/1/2013 wbrockstar
      Sounds like its one of your transmission speed sensors or shift solenoid packs also for tranny.Get autozone to scan it free for trouble codes.Check engine light doesnt always come on in order for there to be a sensor gone out.Otherwise youre playing a guessing game and will be buying parts for no reason
      wbrockstar
      8/1/2013 ash.hale1994
      Would a sensor kill the car though and make it jump around like that?
    • wbrockstar
      8/2/2013 wbrockstar
      Imagine your tranny bein in drive then unvoluntarily bein down shifted to 1st gear,it would sling you all over the place.Another thing that comes to mind because of tach symptoms,ignition problems.If your ignition switch were to malfunction,it would be like drivin while someone cycles the key on-off on-off etc.....If your car has an inertia safety switch for fuel system,it would cause fuel pump to malfunction killin the car,but when your fuel pump stops pumping it wouldnt cause that drastic of a slingin of the car.A car with problems like yours will normally get worse when car is under more of a load,such as accelerating or goin up hills
    • HouseCallAuto
      8/16/2013 HouseCallAuto
      Replace the spark plugs and ignition wires, distributor cap and rotor and oxygen sensor and see if the problem is solved. If it is still there the tune-up was not a waste of parts and labor at all because it has to be done if it has been a long while since these parts were replaced. Another part I would also replace is the ignition coil. The tach jumping around is simply the engines' ignition system being intermittent because of badly worn parts most likely.
      HouseCallAuto
      8/16/2013 HouseCallAuto
      Also replace fuel filter, might be clogged
  • loganrchris
    loganrchris - 2001 Chevrolet Silverado 1500 - Transmissions & Drivetrains - 8/16/2013
    My 2001 Silverado won't shift up past 2nd gear. But it will in tow/haul mode. I can't figure out why. Any thoughts?
    2001 Silverado LS 5.3 Ltr Fixed orange wire to tow/haul button in steering column and then problems started. Now I've tried unhooking wires but doesn't help.
     
    • HouseCallAuto
      8/16/2013 HouseCallAuto
      Read fault codes that may be stored for the tranny, gotta plug in a code reader.
 
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