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Pontiac transmissions & drivetrains repair questions and answers

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  • AutoMD Member
    AutoMD Member - 2009 Pontiac G3 - Transmissions & Drivetrains - 1/19/2014
    My Speedometer, ODO are not working and my transmission will not shift into 4th gear and runs at high RPMS.
    I am stuck at 72,018 miles. We have already replaced the speed sensor which did not fix anything. we checked all the wiring for damage or shorts. The check engine light is on. The transmission fluid is dirty but not burnt smelling. This happened about a week ago ...
     
    0 answer
  • CoolHandLuke
    CoolHandLuke - 2001 Pontiac Grand Am - Transmissions & Drivetrains - 11/28/2013
    Transmission Real hard shifting (Daughters car)
    When you give it gas it feels like engine is almost flooding out. If you are sitting on a hill in drive, soon as you take foot off brake it will start rolling..Almost like driving a manual transmission vehicle
     
    • HouseCallAuto
      11/27/2013 HouseCallAuto
      Code readers, maybe you have heard of them. Get one from amazon.com for $20 and plug it in and read fault codes stored. That is step one in diagnosing a condition as you detail here. This step cannot be skipped as it is a must to know if there are fault codes stored. The check engine lamp need not be illuminated for codes to be present. Update this same post with the code numbers, and if by chance there are no codes present, state that as well because that says something also.
      HouseCallAuto
      11/28/2013 CoolHandLuke
      PO300, PO420, PO440
    • HouseCallAuto
      11/28/2013 HouseCallAuto
      Very strong probability that the catalytic converter is clogged. A clogged cat would give you a P0300 random misfire and a catalytic converter that is not working can and usually does set a P0420. The P0440 is likely a bad Canister Vent Solenoid/Valve unrelated to the other two codes. To confirm the cat, remove the O2 sensor before the cat (yes there will be a loud exhaust leak) and then road test car and if power returned you know the cat is plugged. See how nice codes tell a story.
      HouseCallAuto
      12/1/2013 CoolHandLuke
      It was the Cat.Conv.
      Thank You Very Much !!! You Just Saved Her &/or Me An ASSLoad of Money that Neither of us has...
  • AutoMD Member
    AutoMD Member - 1997 Pontiac Grand Prix - Transmissions & Drivetrains - 11/24/2013
    Will not shift into drive
    will shift into neutral and reverse and park just fine but wont go into drive
     
    0 answer
  • AutoMD Member
    AutoMD Member - 1997 Pontiac Grand Prix - Transmissions & Drivetrains - 11/24/2013
    My car wont shift into drive
    it will not shift past neutral but will shift into reverse and park just fine
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2005 Pontiac Grand Prix - Transmissions & Drivetrains - 11/19/2013
    Pontiac Grand Prix GT with 88K miles showing has check engine light on with P0466 code
    I am having a 2005 Pontiac Grand Prix GT with 88K miles on it. It is showing a check engine light with the codes P0466. I am not sure if that can be repaired by a local mechanic or I need to go to the dealer. I also need to know how severe is the issue and how much ...
     
    • HouseCallAuto
      11/19/2013 HouseCallAuto
      There is no such code P0466 applicable to a 2005 Pontiac Grand Prix GT 3.8 engine according to my all data information system. Perhaps you misread it?
  • 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
    Gigg
    Gigiv
     
  • 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.
 
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