Okay my truck has 200,000+ miles on it, and the odometer stopped working, but all of my other gauges are working perfectly. It is 1997 so it has the mechanical odometer, and I heard the worm gear was probabaly the cause of it. So i bought me a worm gear, and got the instrument cluster completly off, but i cant figure where the worm gear is located on it, or how to get to it. Can someone help me out? Thanks in advance!

 

It is typically the drive gear that breaks not the worm gear.

 

Did you ever get this prob fixed? I have the same prob.
Thanks

 

Mine stopped working 3 weeks ago too at 149,101. I too have a 97

 

Odometer stopped working? Sounds like a blessing to me when it comes time to sell it :-)

 

I ended up buying a new gear and tried repairing it, but in my doing so, I somehow manged to get all my gauges to stop working all together...Im just that talented. So I pulled an odometer out of an expedition in a junk yard. The models with the digital odometers wont be able to do this since the computer wont accept it. Since I have the non-digital, I was able to do so with out having to pay the dealership to recalibrate the computer. I was told that this is illegal what I did, but the cluster I bought had 20,000 more miles on it, so if anything I added more miles to my truck... 243,000 and still kickin.

 

Good job brah! Either way, about it being illegal, it can be. The only way it is illegal if you go to sell the truck and do not tell the buyer about the mileage change, and you don't mark tmu on the title. But, since the truck is over 10 years old, you can put exempt and not worry about it.

 

Ditto! My '98 cluster had intermittent gauges, and the tach read 700 RPM greater than the PCM was reading. $50 later, plus some new LEDs (who wants to take the dash apart again?), I have an accurate cluster - that works! New cluster added 14K miles, but I intend to keep this truck until I can put vintage tags on it!