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Pontiac transmissions & drivetrains repair questions and answers

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  • m,g
    m,g - 1996 Pontiac Firebird - Transmissions & Drivetrains - 11/12/2013
    Would putting lube oil in transmission be difficult to correct?
    mileage 197xxx should I flush the system?
    • Jimm
      11/12/2013 Jimm
      Not difficult to correct at all; first question - is the transmission an automatic? If yes, then simply disoconnect the transmission fluid return line at the radiator - and with the engine / starter engaged (crank the engine - do not start) simply drain some of the trans fluid / lube oil mixture into a small bucket. Refill the transmission with fresh, new trans fluid - and repeat the process until cleaned out.
      You may also need to the change the trans fluid and filter to complete the task.
  • m,g
    m,g - 1996 Pontiac Firebird - Transmissions & Drivetrains - 11/11/2013
    Would putting lube oil in transmission be difficult to correct?
    mileage is 197xxx would a complete flush solve my problem? please reply soon!
    • HouseCallAuto
      11/11/2013 HouseCallAuto
      I'm sure nobody has a final answer on this. Oil contaminates everything. Not sure if a flush will do it. Might take many flushes using a trans-tech machine fluid exchanger.
  • mark213
    mark213 - 2008 Pontiac Grand Prix - Transmissions & Drivetrains - 10/24/2013
    Why is it shifting hard into 2nd?
    When i accelerate hard from a stop, there's a delay as if it went into nuetral, then it shifts really hard into 2nd gear. If i ease out of a stop then its ok. My check engine light is on but its not throwin codes for the transmission
    • HouseCallAuto
      10/24/2013 HouseCallAuto
      Try changing the transmission filter and transmission fluid. Use synthetic fluid.
  • CoolHandLuke
    CoolHandLuke - 2001 Pontiac Grand Am - Transmissions & Drivetrains - 10/19/2013
    Where is the Automatic Transmission DipStick located - 2001, Pontiac, GrandAm, 6cyl., Auto. Transmission ???????
    Automatic Transmission Starting to shift real hard especially we hen first starting out , when its cold. Question : Where The Hell is the Dam DipStick on this thing ??? I feel like a Dip Stick !!! Ive looked all over, I cant find it. its my daughters car. Can ...
    • HouseCallAuto
      10/19/2013 HouseCallAuto
      It don't have one. has s sight plug on side of tranny below the cv axle shaft. Look it up in repair guide and follow procedure to check and to add fluid.
  • AutoMD Member
    AutoMD Member - 2005 Pontiac Montana - Transmissions & Drivetrains - 10/16/2013
    Back wiper is on all the time. lots of jerking in transmission when raining and sometimes just when taking off.
    transmission place cant find problem. dealer cant find problem. just acts up and radio wont turn off when door opens.
    • HouseCallAuto
      10/16/2013 HouseCallAuto
      Both the retained accessory delay (radio for example) and the rear wiper share a common thing - the Body Control Module. The tranny doesn't seem to have any relation with the BCM, but the BCM has long tenytacles that extend into the ABS, the brakes, the cruise control, the horns, the RAP module (retained accessory power, the rear park assist, the shift interlock, the power windows, the HVAC and wiper and washer systems the engine controls. Wondering if anyone plugged in a professional scanner and read data from the BCM, maybe fault codes. Maybe the BCM is junk.
  • Pranav
    Pranav - 2008 Pontiac Montana - Transmissions & Drivetrains - 10/13/2013
  • reemus7637
    reemus7637 - 2006 Pontiac Montana - Transmissions & Drivetrains - 10/7/2013
    What is a clunking sound from underneath the vehicle when shifting into drive, reverse or park?
    There is no rear u-joint, so that's out. The motor rocks forward and backwards when shifted so I replaced all three motor mounts, but that didn't help at all. The 'ABS system disabled' light is on as well as the 'Service ABS system' light. The code said that the ...
    0 answer
  • j_rangel92
    j_rangel92 - 1996 Pontiac Grand Prix - Transmissions & Drivetrains - 9/28/2013
    My pontiac won't go faster than 20 mph and it won't reverse. It also makes a weird noise. What's wrong with my baby? :(
    It makes a weird ticking or clanging noise in different shifts. It won't reverse but when it's in drive it doesn't make any noise. It won't go faster than 20mph. It doesn't jerk when the gears shift (it's an automatic) and it does stay on. It doesn't turn off.
    • HouseCallAuto
      9/28/2013 HouseCallAuto
      The transmission is *probably* junk. Gonna be like $1500 to fix it. Maybe more. Sorry, can't sugarcoat this one. Unless cat converter is clogged up.
  • j_rangel92
    j_rangel92 - 1996 Pontiac Grand Prix - Transmissions & Drivetrains - 9/27/2013
    Is this a transmission problem? My car won't reverse and won't go faster than 20mph and it makes noises.
    It doesn't turn off or jerk when it goes faster. It makes different noises in different shifts (reverse, park and neutral) It won't go faster than 20mph. What's wrong with my baby? :(
    0 answer
  • Kristin
    Kristin - 2005 Pontiac Grand Prix - Transmissions & Drivetrains - 9/13/2013
    Why is my car shutting off while driving?
    Recently while driving my RPM will drop to 0 and my car will shut off. After pulling over and letting it sit a minute it would start right back up. It displays a message saying reduced engine power, electronic throttle control and service traction system. My engine ...
    • HouseCallAuto
      9/13/2013 HouseCallAuto
      Buy a code reader from amazon for $17 and plug it into the diagnostic connector under the driver side dash and read the fault codes that are stored and update this post with the code numbers and then we will tell you what to do next.
  • psjordan70
    psjordan70 - 1998 Pontiac Grand Prix - Transmissions & Drivetrains - 9/10/2013
    My transmission will not go in drive or 3rd /2nd gears.It will go in reverse @1st gears
    It has leaked transmission fluid for about a year now
    0 answer
  • sherrihayward
    sherrihayward - 1999 Pontiac Sunfire - Transmissions & Drivetrains - 9/2/2013
    Cause for an engine to rev over 5 rpm...sluggish no power
    So driving down the hwy at 100/kph fine for first 50km then began to "hiccup. RPM would jump to 3-4 then drop back to 1-2. Pulled off highway let car sit. Started again problem immediatly presented at 20-20/kph. symptoms seemed better when dropped to 2nd gear....for ...
  • nbdude1
    nbdude1 - 2006 Pontiac Pursuit - Transmissions & Drivetrains - 8/24/2013
    My car is an automatic, base model. It makes a loud humming noise, the faster you go, the more it hums.
    155000km's. Hum is not engine related, it only happens when it hits around 25 mph and higher. The faster you drive, the louder and higher it hums, like tire noise. Throw it in neutral when driving and the sound stays the same.I rotated the tires , but this did not ...
    • Jimm
      8/24/2013 Jimm
      Where does the humming noise sound like it's coming from? In the center of the vehicle, like the engine or transmission? Does the noise sound localized - like perhaps from one of the wheels at the corner? Does the hum change according to the road conditions - such smooth versus bumpy or rough?
      Check the following conditions; worn / faulty constant velocity (CV) drive axle (on the front wheels), worn / faulty upper strut bushing (either front or rear), worn / faulty wheel bearing / wheel hub bearing (front). low transmission fluid (check and refill as necessary).

      Check these items, then post a reply with the results - for further assistance.
      8/24/2013 nbdude1
      Hi Jimm, thanks for the reply. The sound seems to be coming from the wheels, maybe more so on the drivers side. the sound only increases with wheel speed, not with the engine or when pushing it hard through the drive range of gears. Road conditions make no difference, or going around corners. If I am driving it faster than 25mph the sound is there constantly. I will check fluids and reply.
  • humble_jeremy
    humble_jeremy - 1997 Pontiac Grand Prix - Transmissions & Drivetrains - 7/28/2013
    Transmission slips out of gear but can put it in neutral turn car off and start it while still moving
    And will drive just fine for 2 mi. - 30 mi. And start slipping out of gear agsin and it startef making a rubbing - clicking noise like gears trying to engage. When I turn car off and restatt it quits until it pops back out I'm a mechanic haves to trans. Computer or ...
    0 answer
  • lovaweak
    lovaweak - 2002 Pontiac Grand Prix - Transmissions & Drivetrains - 7/22/2013
    Why wont my car shift into 2nd gear? Takes off fine and reverses, thats it!
    it has 160,000. miles on it. 4 diff mechanics put it on comp, no trans codes coming up. All 4 say something totally different! Not sure what to do. Fluid level is fine, but has a little orangish color.
    0 answer