Question about 1995 GMC Sierra

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Tach,speedometer,not working,indicator for shift,will not shift

Tach,

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You can take a mileage correction tool to adjust, such as the Tacho Pro 2008 Plus Universal Dash Programmer

Posted on Oct 30, 2012

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wireguy212
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SOURCE: tach, speedometer, and odometer do not work.

the ignition switch needs to be replaced,not the key switch but the actual switch and harnes9comes together.when this is deftive you have the abive symtoms but only 3rd and reverse will work.try tapping the switch,if the tach ect. starts working so wil the tranny,repace the switch.

Posted on Jul 29, 2009

  • 1 Answer

SOURCE: my tach/speedodometer stop working along with the

I had the same problem. Non funtioning Tach and Speedometer, no power, unable to shift gears, gear indicator light out... I spent the past two hours tracing most wires and checking connectors, looking for faults, testing switches and actuators, I finally noticed that the problem was tied closely with the ignition switch. There is a fault in the switch between position 1 and 2, "Off" and "Run". A search on the web brought up information on the following site that VERIFIES this problem:

http://autos.msn.com/research/vip/Reliability.aspx?year=1995&make=GMC&model=Suburban#Star

I will contact the GMC dealer tomorrow and ask THEM to describe the bad switch problem and also see about purchasing parts. WHen I call this morning to describe the problem, they claimed to know nothing of the problem, BUT, were more than happy to offer diagnostic services for $120. This truck is slightly more complicated than a lawn mower, I can check it myself.

Kurt
kd7jyk@earthlink.net

Posted on Oct 22, 2009

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1 Answer

TRANSMISSION


Fuse # 20 or 21 gets power through ignition. This fuse controls PRNDL indicator, speedometer, tach, & will cause transmission to not shift gears correctly. Ours took off in 3rd gear when put in Overdrive & only ran in 3rd gear. If we tried to manually shift thru gears (auto trans), it had 1st, 3rd, reverse. No 2nd or over drive. Replaced ignition. Fixed problem. Root problem was Electric motor that engaged 4 wheel low side was bad. Every time we used 4 Low side it threw power surge through ignition & blew ignition out. Good Luck.

Feb 06, 2014 | 1997 Chevrolet K1500

1 Answer

Tach & speedo not working


Had same problem with my 2000 dodge stratus 2.4 liter and transmission would not shift out of 1st gear. Solution was ignition fuse under the hood was blown, one side of fuse working, replaced 10 am fuse everything works, tach, speedometer, gas gauge and transmission started back to shifting.

May 27, 2010 | 1996 Oldsmobile Achieva

1 Answer

Tac dont work. tranmissionwant shift unless you let off of gas


The connector on the back of the gauge cluster isn't making a good connection. If the speed senser is bad the speedometer won't work either or the fuse the speedometer won't work but if the speedometer does work the trans controller or the shift switch ( park neuurtal drive ) could bemaking abad connection or be full of tans fluild or water (frozen?) The tach not working may indicate a fuse or connection problem to the cluster ( speedometer gauge unit and the computer doesn't know how fast the motor is going) The check engine light should be on in this case and checking for codes and following the repair recomedations for them should find the problem

Feb 18, 2010 | 1995 Nissan Pathfinder

2 Answers

Tach and speedometer don't work transmission won't shift , I had blew a fuse with the a trailer not being wired correctly. Checked all fuses in fuse boxs. Service light is on says speed sencor. But had no...


The speed sensor is necessary to tell your transmission when and if to shift. The PCM uses the information from it, plus the way your vehicle is accelerating to determine shifting, and if the sensor went out, or the PCM went bad, then you'll lose your transmission shifting. You can shift it manually though. There is also a fuse under the hood that provides the transmission with power, and of course, if any wiring or connections are bad, will cause the same problem. Hope this is was you're looking for.

Jan 10, 2010 | 1996 Chevrolet Silverado 2500

1 Answer

Have a 95 GMC truck and the speedometer, odometer,


Check fuse 20 on Insturment Pannal fuse block.

Oct 09, 2009 | 1995 Chevrolet K1500

1 Answer

My tach/speedodometer stop working along with the shift indicator,trans wont shift


I had the same problem. Non funtioning Tach and Speedometer, no power, unable to shift gears, gear indicator light out... I spent the past two hours tracing most wires and checking connectors, looking for faults, testing switches and actuators, I finally noticed that the problem was tied closely with the ignition switch. There is a fault in the switch between position 1 and 2, "Off" and "Run". A search on the web brought up information on the following site that VERIFIES this problem:

http://autos.msn.com/research/vip/Reliability.aspx?year=1995&make=GMC&model=Suburban#Star

I will contact the GMC dealer tomorrow and ask THEM to describe the bad switch problem and also see about purchasing parts. WHen I call this morning to describe the problem, they claimed to know nothing of the problem, BUT, were more than happy to offer diagnostic services for $120. This truck is slightly more complicated than a lawn mower, I can check it myself.

Kurt
kd7jyk@earthlink.net

Oct 08, 2009 | 1995 GMC Suburban

1 Answer

Tach, speedometer, and odometer do not work. tranny dont down shift.


the ignition switch needs to be replaced,not the key switch but the actual switch and harnes9comes together.when this is deftive you have the abive symtoms but only 3rd and reverse will work.try tapping the switch,if the tach ect. starts working so wil the tranny,repace the switch.

Jul 29, 2009 | 1998 GMC Sierra

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