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Bouncing speedometer, hard shifting - 2009 Buick Lucerne

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Transmission shifts hard


You don't give me much information to work with. However, 1st, look at the engine mounts. You may have a broken mount. This will make it feel like the transmission is shifting hard. Other than that, there is only a few things that will cause this. The speed sensor tells the computer when to shift the shift solenoids. It may not be "seeing" a quality signal. If this is the case, the speedometer will be bouncing too. Last idea is that it is skipping a gear. Starts in 1st, should go to 2nd at about 10 MPH. 3rd at 25 to 30 MPH. And, if you have a Overdrive transmission, it should go into overdrive at around 45 to 55 MPH. If it is skipping 2nd, it will engage 3rd at a high engine speed, and will feel like a sudden slam into gear. If this is true, your transmission needs some work. Hope this all helps. Good Luck.

Jun 19, 2014 | 2002 Pontiac Sunfire

1 Answer

I have a 2008 GMC Yukon XL Denali. I hit a small snow drift yesterday and now my speedometer stopped working, my RPMS are bouncing, oil pressure is bouncing, temp is bouncing and vehicle wont shift out of...


Vehicle speed sensor, wheel speed sensor, your VSS operates you MPH and tells the trans how fast you are going and when to shift, it is telling the trans that your not moving so why would it shift? Next your ABS wheel speed sensor tell the car what wheel is moving at what speed to activate traction control and abs systems both are very sensitive and easy to break

Dec 29, 2013 | GMC Yukon Denali Cars & Trucks

1 Answer

1993 dodge entrepid 3.3 liter


Internal transmission failure, What you describe is loss of prime.This can range from low fluid level to low pressure from the front pump.You can check you transmission fluid,have vehicle running placed in park check the transmission dip stick,The fluid must be in the range.You can also shot gun a repair by replacing the output speed sensor.

Feb 28, 2012 | Cars & Trucks

1 Answer

I have a 95' 1500 chevy pickup ... Cluster issue


sounds like you may have a problem with your speed o gear in trans.

Dec 11, 2009 | 1994 Chevrolet K1500

1 Answer

Truck stalls at stops


change the vehicle speed sensor,that has alot to do with shifting,the speedometer,and it will slam into gears as to shift from park to drive or reverse,and when it shifts gears.its about a $35.00 part

Jun 01, 2009 | 1993 Ford F250

2 Answers

Green sports light blinks , speedometer needle bounces or doesn't


Does your D4 blink and is your cruise control operating. When you start it does it sometimes start real rough and shake a lot? If so it's probably your ICM.

May 19, 2009 | 1991 Honda Accord

1 Answer

Cummins Diesel Truck Erratic Speedometer and Shifting


Although you didn't mention it, the speedometer probably bounces also. Replacing the speed sensor on the side of the transmission should solve both your problems. Good luck

Apr 10, 2009 | 1996 Dodge Ram

1 Answer

Speedometer doesnt work or bounces causing car to studder


On my 96 the PSOM module went bad. That is located on the back of the instrument cluster. Mine is analog not digital. What was happening was that the PSOM (Programable Speedometer Odometer Module) would mess up and the speedometer would jump all over the place. The tranmission is electronic and the computer would adjust and shift depending on the speed reported by the speedometer. The van would **** and shake. At slower speeds it was much better. I changed the speed sensor first without success. Changed the instument cluster and all was well.

Jul 30, 2008 | 1994 Ford Aerostar Extended

1 Answer

Speedometer not woking shifting hard 1993 ford f150 4x4 -302


when i bought mine the speedometer odomoter and raido didn't work
put in a fuse that wasnt' in got them all and now when u are driveing it shifts out of gears or sometimes it wont shift past first any ideas?

Jun 02, 2008 | 1993 Ford F150 SuperCab

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