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Pontiac transmissions & drivetrains repair questions and answers

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  • DC
    DC - 1996 Pontiac Sunfire - Transmissions & Drivetrains - 11/14/2010
    Transmission won't shift any ideas?
    1996 pont. sunfire conv. 2.4L 4T40E transmission getting a code 753 1 - 2 shift solenoid, any ideas of what I'm getting into?
    • TechSam
      11/14/2010 TechSam
      When the PCM detects a short, short to ground, short to power then DTC A753 is flaged the shift solenoid is in the valve body in the transmission.
  • melody
    melody - 2000 Pontiac Sunfire - Transmissions & Drivetrains - 11/14/2010
    Its a torque converter sensor or switch
    • TechSam
      11/14/2010 TechSam
      Torque converter is nither sensor nor a switch, its is a big bowl like, sealed, with fins inside it for the tranny fluid to create vortex flow in it for OD over drive. Torque converter is driven by the engine and connects to the tranny.
  • emachine531
    emachine531 - 1997 Pontiac Sunfire - Transmissions & Drivetrains - 11/14/2010
    Vibration at specific speeds?
    The vibration is felt mostly at speeds 40-45MPH and 65-75MPH, and felt through the seats. It started a few months ago, without warning. There are no lights on, no check engine, nothing.
    • TechSam
      11/14/2010 TechSam
      Vibration at a certain speed indicates some thing in your vehicle which turns being out of phase such as tires might need balancing.
  • LWR
    LWR - 1999 Pontiac Grand Am - Transmissions & Drivetrains - 11/13/2010
    My car has no dipstick from manufactuer for trans fluid...
    How do I check fluid level without going to the dealer?
    • Zac
      11/13/2010 Zac
      On these transmissions there is no dipstick. There is a red cap right on top of transmission under wrap around exaust manifold. I suggest you wear a glove it will be hot. You have to lift vehicle and ensure it is level and on the passenger side of transmission next to the drive axle outlet, right above the transmission fluid pan, there is a little screw you take out. With transmission warm, engine running, fluid should just be trickling out, if it pours out it is overfilled. Pour transmission fluid in it till it just trickles out.
  • dean
    dean - 2002 Pontiac Grand Prix - Transmissions & Drivetrains - 11/11/2010
    Need to know where the auto trans control solenoid is located
    • TechSam
      11/8/2010 TechSam
      It is a square box located on the transmission, Why do you ask?
    • ERIC
      11/11/2010 ERIC
      think the solenoid is bad when on the highway feel alot of stress on the motor when accelorating
  • ERIC
    ERIC - 2001 Pontiac Montana - Transmissions & Drivetrains - 11/11/2010
    There is a heater core line leaking would that cause the tranny to rev or put alot of pressure on motor?
    leaking from quick connect on heater core line sounds like vacum leak and causes the tranny to have issuee (revs)
    0 answer
  • Snickerz
    Snickerz - 1997 Pontiac Grand Prix - Transmissions & Drivetrains - 11/8/2010
    Cruise control cuts out in the rain...
    My cruise control works wonderfully in dry weather, but in the rain it kicks itself off. The rainier it is, the more it does this. Is there a sensor or relay getting wet and failing? I have tried to take it in to a mechanic but keep getting the same response, "I ...
    • TechSam
      11/8/2010 TechSam
      Any time your VSS vehicle speed sensors feel resistance or if there is varation between the VSS due to Rain, Snow, or loose sand the Cruse control will switch off, this feature is for your safety.
  • Bill
    Bill - 1996 Pontiac Bonneville - Transmissions & Drivetrains - 11/8/2010
    Will not move in drive or reverse
    Everything was fine until I stopped for gas. And then it wouldn't move. I had no indication of anything being wrong until that point. What would cause this?
    • vince^_^
      11/7/2010 vince^_^
      Check the condition of your brake light switch behind your brake pedal, it may be faulty.
      11/8/2010 Bill
      How does the brake light switch effect the transmission? If the brake was on I could still feel the car want to move. The car goes into park and neutral fine
    • Bill
      11/8/2010 Bill
      How does the brake light switch effect the transmission? Ifthe brake was on I could still feel the car want to move. The car goes into park and neutral with no problem
  • JOHN
    JOHN - 1993 Pontiac Bonneville - Transmissions & Drivetrains - 11/7/2010
    Does the vehicle speed sensor have anything to do with the cruise control on a 1993 Pontiac Bonneville?
    • TechSam
      11/7/2010 TechSam
      Every VSS vehicle speed senosr has to do with the cruse control, if the cruse control doesnot get signal from the VSS it cannot set the cruse.
  • carguymn
    carguymn - 1997 Pontiac Bonneville - Transmissions & Drivetrains - 11/6/2010
    Trans slips in OD after driving at hiways speeds.
    Transmission slips when warm and in OD. RPMs will gradually increase at times, up to 5000 rpm. Engine temp also goes up at this time. Pull over and let car idle for about 10 min and then it will operate normally for a few more miles. Today i tried shifting into ...
  • Yvonne
    Yvonne - 2001 Pontiac Grand Am - Transmissions & Drivetrains - 11/4/2010
    I want to add a transmission conditioning cleaner to my transmission fluid, but cannot find the cap - where?
    Mechanic says there is a slight transmission leak, no way to check transmission level unless we do a full flush and fill. Not going back! Once I find the cap I plan to check it for the correct level as per repair iinstructions. I can't quite identify where the cap ...
    • HKS Guy
      11/3/2010 HKS Guy
      On the transmission itself, close to the back of the filter and pan, there is a check plug. This plug, when opened, should be filled to just overflowing.

      1. Jack your vehicle up or raise it on a lift, but it needs to be level so the fluids are level as well.
      2. Open the check plug on the transmission.
      3. Start your engine and shift the transmission into neutral. The transmission fluid should be at the level of the opened check plug.
      4. If the fluid is lower than the check plug, or no fluid drips out, fill the transmission fluid until it just seeps out.

      There is no dipstick, but there is a cap to fill transmission fluid accessible from under the hood. It is located on the right side of the engine bay between the power steering pump and the intake box.

      Don't wait until the sensor goes off to check/replace transmission fluid. Wear gloves please
    • Yvonne
      11/4/2010 Yvonne
      Perfect, thanks. :-)
  • Liss
    • david
      10/28/2010 david
      you will have to carry to dealer could be bad key or lock cylinder
    • HouseCallAuto
      10/28/2010 HouseCallAuto
      Nope, ya don't need the dealer. You need to do a Passlock relearn. Try this for some joy >>

      Perform the Passlock learn procedure as follows: 1. Turn ON the ignition, with the engine OFF. 2. Attempt to start the engine, then release the key to ON. The vehicle will not start. 3. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF. 4. Turn OFF the ignition, and wait 5 seconds. 5. Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes. 6. The fourth time the engine is cranked, it should start and run.
      12/3/2011 Chuck
      What if I do not have a key with the chip in it will this work anyway?
  • Tina
    Tina - 1995 Pontiac Firebird - Transmissions & Drivetrains - 10/27/2010
    Transmission fluid is coming out of dipstick. It is not overfull. What is wrong?
      10/27/2010 MOONSTER_TOOLZ
      I believed the fluid level is more than full otherwise the transmission cooler is clogged or its passage and the fluid pressure forcing the fluid to go out through the dipstick passage. Did you notice any irregularity in function of the transmission, like gear slippage or noise maybe? Try to give us further details with this so we're able to help you in diagnosing the trouble. Is the check engine light comes on?
    • marvin
      10/27/2010 marvin
      All transmissions are vented to release pressure to the atmosphere. Locate vent tube on case to see if it is clogged or restricted. Any overfill should be exiting from that vent hose. Otherwise take MOONSTER TOOLZ advice. Try easy first.
  • bobbyjack
    bobbyjack - 2001 Pontiac Sunfire - Transmissions & Drivetrains - 10/26/2010
    Why wont my car go into gear?
    I went to start my car yesterday and it started fine. Then i put the car in drive and hit the accelerator and the car backed up... I tried swithching it into all the positions to try and get it in gear but wouldnt move.. I cut the car off to try again and now the ...
    • Bill
      10/26/2010 Bill
      Hate to be the bearer of bad news but I believe your transmission and/ or torque converter has bit the big one. Sorry
  • kichkow
    kichkow - 1995 Pontiac Grand Am - Transmissions & Drivetrains - 10/22/2010
    Tranny makes a clunking noise when in park or neutral
    will not shift into higher gear unless I let off the gas so the rpms drops then it will shift into second same with third. If i do not let off the gas and let it shift that way, the engine will continue to just race at higher rpm's.
    0 answer