2003 trailblazer, some of the guages are not working, the battery guage, the tachometer, and the speedometer

i would recmend changing the cluster as you have changed the vss and it seems to have other issues with lighting up other needles in the cluster

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You shorted out the wireing harness, going to the guages, Possiblly evan a fusible link was mess up.

First thing I'd look at is replacing your ignition switch. This is notorious for making the guages work quirky or go out. If not, the little stepper motors on the back of each gauage are easy to replace.

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

If all the guages quit working at the same time, then it is probably a blown fuse. Check your fuse panels in the dash or under the hood. Look for a fuse that is labeled instrument panel or guages, it is probably blown.

Probbably a bad body earth, Check allyour body earth connecions!
Hope this helps.......Bruce

chevy refuses to recall this speedometer. The same part is in several other models and they were recalled. The stepper motor in the gauge cluster is faulty. The dealership will charge around $700 to replace it. I reported it to the gov't agency that handles recalls and chevy in detroit. No results.

check the vehicle speed sensor located on the transmission housing.

"The Fix" works...I would have not believed it untill I did it.... Start the car in reverse and about 5 times later it reset the speedometer back to zero.....wow!