Question about 1997 GMC Yukon

Open Question

Won't shift gears and speedo stops working

Speedo quits working and it won't shift out of first gear. When the speedo starts to work, then it shifts gears again

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

shaggyrat
  • 1224 Answers

SOURCE: speedo quit working-- trans

your fluid is low and quite possible you seized your tranny up apply fluid and dont just rely on dipstick for this make sure the tranny is full of fluid

your linkage to transmission might have come apart another reason for no shifting

now for the speedo
there is a little device that connects speedo cable to the tranny and then the mechanical of tranny from there is called a speedo bullet
if you seized your tranny the speedo bullet would have gotten sheared off in side the speedo bullet is wrenched on and can be wrenched off replace the bullet speedo should start working again

Posted on May 30, 2008

  • 321 Answers

SOURCE: Speedo stopped working and tranny wont shift out of first!

I will try and clear up any confusion about the different model designations.The trans was first introduced as the Turbo Hydramatic 700 r 4.Later in the evolution of that family,it had improvements made on it by the factory engineers,and they redesignated it the 4L60 model.The 700/4L60 uses a throttle valve cable as a mechanical indication of the throttle position....to the trans.The TV cable regulates mainline hydraulic pressure inside the transmission.This model also uses a governor as a road speed mechanism.It is responsible for the TIMING of the upshifts,and is responsible for the trans being in first (low) gear from a standing start.In 1993,the 4L60E was introduced to the lineup.Same trans as the 700/4L60,but now it is totally electronic,and totally controlled by the PCM (Powertrain Control Module) based on electrical inputs/outputs from the trans,throttle position sensor,road speed,etc.The engineers took the 700/4L60 and did away with the governor and TV cable,made it totally electronic.Early 700's had a mechanically driven speedometer,while the later 4L60's and E's had an electronic speedometer.1993 was a transition year.I have seen both,the 4L60 and the 4L60E in 1993 model trucks,it depends on the month of the manufacture of the vehicle.Your truck could have either,or.The way to visually identify the difference is........on the driver side,the 700/4L60 trans case will have a round,black,governor cover,about 3 or 4 inches in diameter.The 4L60E case does not.The 700/4L60 also has the TV cable mounted on the passenger side of the trans case,and it routes up to the throttle body/gas pedal/accelerator linkage.The 4L60E does not.Recently,the 4L65E and 4L70E versions have been put into production.Based on your description of the malfunction symptoms,i would be inclined to say yours is probably the 4L60E version,because the speedometer malfunction occuring at exactly the same time as the shift malfunction.On a 700/4L60,the speedo malfunction would have no affect on the upshifts,the trans would operate normally.On the 4L60E,a speedo malfunction would likely cause no upshifts.You should still visually verify by the governor cover,or lack thereof,on the side of the trans case.It could just be a speed sensor malfunction if it has the "E" model.If so,it would have set a trouble code which can be accessed with a scan tool or a code reader.Hope this eliminates any confusion.Good luck!!

Posted on Nov 28, 2008

  • 1 Answer

SOURCE: Speedo stopped working last night. Stuck in first!

Your Trans should be the 4L60. If your speedometer quits working and the truck won't shift out of 1st gear, the "Speed Sensor" is probably bad or the wiring is bad where it plugs into the sensor. The sensor will be towards the back of the trans or on the tail shaft. An easy way to test if the wiring is bad at the plug is to pull on the wire 3" or 4" from the plug and watch closely to see if it stretches. If there is any stretch the wire inside the plastic sheath is broken.

Posted on Jan 16, 2009

  • 85 Answers

SOURCE: tac,speedo and transmission indicator bar stopped working

This trans is computer controled if your gages quit working as well I would start checking fuses and relays. If this doesn't provide a solution let me know and I will get my manual out and go a little deeper.

Posted on May 01, 2009

  • 447 Answers

SOURCE: I have a 1995 gmc

You may have a bad Vehicle Speed Sensor [VSS] This sensor provides the information the speedometer needs to indicate speed and also supplies the transmission with information it needs to determine when to shift. If the signal is lost you can end up with the very symptoms you are having. It's usually located on the rear of the transmission or transfer case area. Hope this helps!

Posted on Nov 27, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1992 Subaru legacy wagon will not shift up from first gear. it is an AT.


run the fault but all you describe is operated from the VSS sensor ( vehicle speed sensor)
it tells the cruise control the vehicle speed , tells the TCM the vehicle speed so that ratios can be changed, activates the speedo,and will report with a check engine light to report a transmission problem
run the fault codes first

Mar 05, 2017 | Subaru Cars & Trucks

1 Answer

My speedometer isn't working and won't shift gears..? Changed In/Output .. What else could be the problem ?


speed sensor / speedometer drops too zero - Car Forums and ...

www.automotiveforums.com > ... > Ford > Escort
Because the speed sensor isn't working the speedometer isn't working either. ...thinks you are stopped or going very slow and won't shift it out of first gear.

Won't Shift Out of First - BIONICDODGE.COM

www.bionicdodge.com/bionic/index.php?topic=1645.0;wap2
A friend of mine has a Durango, the tranny wont shift out of 1st. ... Tip: If its a speed sensor problem, you may find that the speedo isn't working very well. ... To check and see if 2nd gear is messed up mechanically, manually hold it in low 1, ...

21298304 Tack and speedometer quit working, won't shift ...

dochost.no-ip.org/F/.../t21298304-tack_speedometer_quit_working_shif...
My van won't shift into overdrive, speedometer isn't working, door locks are not ...My speedometer quit workin and my gears are a lil hard shiftin and i have no ...

Speedometer Odometer trans shift issue - Ford Truck Enthusiasts Forums

www.ford-trucks.com > ... > Misc. > Electrical Systems/Wiring

Jan 25, 2016 | Cars & Trucks

1 Answer

1994 chev 4x44l60 trans,np241c tcase,speedo stopped working trans immedeatly stopped shifting past 2 gear


FIX SPEEDO MAY NEED A SPEED SENSOR AND IT WILL NOT SHIFT IF IT DOES NOT SEE THE OUT PUT SPEED

Feb 21, 2013 | Cars & Trucks

3 Answers

98 Camry LE V6 Speedometer/Odometer and transmission shifting issue


if the speedo is not sending a speed the trans will go into back up mode and the trans will not shift normally check the speed sensor

Aug 28, 2012 | 1998 Toyota Camry

1 Answer

93 chevy 3500 no speedometer, no power to ******, ****** won't shift


Im having trouble as well with shifting higher than second gear and me speedo doesn't work.checked all fuses replaced vss (both) and still no speedo or shifting. any ides would be great. I have power at buffer and tranny

Sep 10, 2011 | 1993 Chevrolet C/K 3500

1 Answer

Won't shift out of first gear


good diagnosis that is correct if the vehicle speed sensor is not working the speedo doesnt work and the trans doesnt know when to shift

Jul 17, 2009 | 1998 Ford Windstar

1 Answer

95 taurus will not shift out of first gear.


My inlaws Ford Taurus had a similar problem. Is the speedometer working? Their speedometer was working one minute and then the next it wasn't, when it wouldn't shift, the speedo wasn't working either. When the speedo decided to work the transmission shifted. In this case I deduced and researched the speedo sensor. My theory was that if the computer couldn't determine the speed, it wouldn't know when to shift. My research validated my theory and basically stated that when the speedo doesn't tell the computer how fast the car is moving then the computer places the transmission into 2nd gear as a default Safety Mode. I replaced the speedo sensor (located on the backside of the engine on top of the axle with a wire lead pluged into it). When I replaced it their troubles were over. I don't know if this is your problem, but it's something to look into.

Mar 14, 2009 | 1995 Ford Taurus

2 Answers

Ford Escort 1997 Problems shifting gears


THE SPEEDO PLAYS A BIG PART IN HOW YOUR TRANSMISSON SHIFTS GEARS FIX SPEEDO FIRST AND THE TRANS WILL SHIFT PROPLEY AGAIN CHECK FUSES

Dec 18, 2008 | 1997 Ford Escort

Not finding what you are looking for?
1997 GMC Yukon Logo

Related Topics:

24 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75051 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...