2003 HD FXDL - Speedometer works, but tachometer stopped working. How can I fix this problem? Thanks.

replace the cable for the speedo as it may have been removed so that correct mileage was not recorded
the tacho gets its signal from coil impulses or ignition module so check for disconnected wires

Check the speedometer sensor on the gearbox. This is a common problem on Harleys. It can only be replaced as it is a sealed unit.

Check your fuses

To get the best information you should go to www.hdforums.com. You will find some very friendly and helpful people on the site.

Hi Norton,

What has happened is your speedometer and tachometer drive motors are failing inside your silverado instrument cluster. I see this very often in GM trucks, to fix the problem you need to have your instrument cluster rebuilt.

Check out this article that talks more about it http://drspeedometer.com/chevy-silverado-instrument-clusters-why-they-quite-working

Thanks,
Fred

The speedometer and tachometer problem on your Trailblazer instrument cluster is very common on the 03-06 models. It's caused by failing stepper motors on the cluster's circuit board and can be fixed. Check out this page for more on how to get it fixed - Trailblazer tachometer problems

Hi, your speedometer and tachometer drive motors are wearing out and need to be replaced. You'll need to pull your instrument cluster and send it off to be repair.

I am and expert in silverado speedometer repair and can get you fixed up quickly. Check out my site here www.DrSpeedometer.com

Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Sierra instrument cluster repair

did you check your fuses???

Make sure you have installed the battery correctly red cable on the (+) and black cable on the (-) side sounds like it may be reversed this wold cause instant battery drain.