Question about 2001 GMC Jimmy

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Speedometer drops to 0 then transmission will not shift

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  1. does the check engine lamp come on?
  2. best guess> vehicle speed sensor problem
  3. if lamp comes on have code read out and repost the problem

Posted on Sep 06, 2010

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Posted on Jan 02, 2017

  • 183 Answers

SOURCE: Replaced rear differential speed sensor

Did you use a mopar sensor.I have fixed this problem many times and not had much luck with the aftermarket sensors.Just a thought.Good Luck!!!

Posted on Aug 04, 2008

  • 5 Answers

SOURCE: transmission does not shift and speedometer does not work

replace the input and output transmission speed sensors, they run about $20 a piece you will need a 1" deepwell socket to easily replace these. It took me about 45min or so without deepwell sockets but would have taken about 20min with them.

Posted on Jun 29, 2009

  • 60 Answers

SOURCE: 96 volvo 850 speedometer somtimes works then it drops to 0

Two questions: Is your odometer working? If not then it's probably a broken gear by the stepper motor that Emissionwiz mentioned. Is your ABS and/or TRACS light on intermittently or constantly. If so that is a common sign your ABS control module has gone or is going bad. This usually happens before the speedometer starts acting up. Either one of these will start intermittently and finally end up with the speedometer not functioning at all, and both are pretty common failures with this model.

Posted on Oct 21, 2009

  • 33 Answers

SOURCE: speedometer dropped..?

sounds like you will need a speed sensor wich is located on transmission.

Posted on Jan 05, 2010

  • 1757 Answers

SOURCE: speedometer drops to zero while moving and then

The Vehicle Speed Sensor located on the Transmission is malfunctioning or the connection is malfunctioning.
It is very easily removed and replaced.
The Vehicle Speed Sensor sends vital information for the Transmission to properly Shift. Because yours is malfunctioning, this lack of information is causing shifting problems.
I do not know if you have a Mechanical or Electrical (Gauges or Digital) Instrument Display. I also do not know if you have a 17 or 19 bolt transmission pan, nor what type of transmission you have (AX4N or AX4S) Nor if you have a Speedometer Cable (Mechanical Instrument will have Gauges=Cable).
The best thing to do is to check the connections of the Vehicle Speed Sensor. Unplug and check both sides of the connection for corrosion/oxidation. You can also take this sensor out of the transmission and clean the interior end; reinstall and recheck operation.
If this does not fix the problem, then remove and replace this snsor.
Take the Sensor with you to the auto parts store to compare the part you receive. You should know what tansmission you have and the number of bolts on the transmission pan, and whether you have an Electronic (Digital) Instrument Panel or Mechanical (Gauges) Instrument Panel on your dash.
Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

Posted on Feb 17, 2010

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1 Answer

Speedometer drops to zero while moving and then


The Vehicle Speed Sensor located on the Transmission is malfunctioning or the connection is malfunctioning.
It is very easily removed and replaced.
The Vehicle Speed Sensor sends vital information for the Transmission to properly Shift. Because yours is malfunctioning, this lack of information is causing shifting problems.
I do not know if you have a Mechanical or Electrical (Gauges or Digital) Instrument Display. I also do not know if you have a 17 or 19 bolt transmission pan, nor what type of transmission you have (AX4N or AX4S) Nor if you have a Speedometer Cable (Mechanical Instrument will have Gauges=Cable).
The best thing to do is to check the connections of the Vehicle Speed Sensor. Unplug and check both sides of the connection for corrosion/oxidation. You can also take this sensor out of the transmission and clean the interior end; reinstall and recheck operation.
If this does not fix the problem, then remove and replace this snsor.
Take the Sensor with you to the auto parts store to compare the part you receive. You should know what tansmission you have and the number of bolts on the transmission pan, and whether you have an Electronic (Digital) Instrument Panel or Mechanical (Gauges) Instrument Panel on your dash.
Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

Feb 17, 2010 | 1997 Mercury Sable

1 Answer

Speedometer dropped..?


sounds like you will need a speed sensor wich is located on transmission.

Jan 05, 2010 | 1989 Toyota Camry

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Is speedometer connected to Tranny?


There is a vehicle speed sensor on top of the rear differential, this sensor is also for the anti-lock brakes. Sometimes you just remove it and clean it (it's magnetic) and may start working again otherwise you have to buy new. Yes, this sensor will affect the trany shifting.

Nov 07, 2009 | 1999 Ford Explorer

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Transmission and Service Engine Soon light


it might be your vehicle speed sensor. It affects your speedometer, your cruise control and your trans shift points. Also, your throttle position sensor (TPS) affects shift points.

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Jun 22, 2009 | 1997 Ford Taurus

1 Answer

Speedometer dont work and wont shift


when we dropped in the transmission we pinched the wire foe the speedometer
we fixed this wire and now the speedo works and the car shifts great.

Apr 06, 2009 | 1999 Oldsmobile Alero

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99 Mercury sable speedo/tranny


VSS (vehicle speed sensor) Tells the PCM (computer) the speed of the vehicle so the PCM can make the proper information to the TCM (transmission control module) to shift.
YOU are goin gto need a scan tool NOt a code reader to monitor the VSS to see what it is putting out for speed when the car is moving But I believe you need a VSS but do not not Go out and buy one until you have had it tested , and can positively confrim it is bad first. Please rate this a fixya if you find this advice helpful, Thanks Randy

Sep 02, 2008 | 1999 Mercury Sable

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