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My durango has the same issue none of the above work. The reset does not light anything up could it bt the cluster bad. Anybody with a answer please let me know.
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
On another forum someone said to disconnect the cables from the battery; press on the brakes several times to release any electrical charge still in the system; wait a few minutes and reconnect the battery cables. It worked like a charm--speedometer, tachometer, and display all function now!
that is likely either a blown fuse... or a relay that is not working. i don't have the manual handy for your car to tell you which one it is. remember there is also a fuse panel located in the engine compartment, on some cars it's in the trunk. look for any blown fuses
Sounds like you jumped it straight to the battery post,You need to reset the computer,To do this,Unhook the battery for 3 or 4 minutes and then hook it back up.This will reset it and as long as you didn't fry a sensor or relay,It should be fine.
On our 2007 Subaru Forester, I followed the above tips but with one small difference. Instead of disconnecting the battery and waiting hours for the ECM to reset, I found on another page that the ECM can be instantly reset by disconnecting the negative battery cable and pressing the brake pedal for a couple of seconds. Worked immediately!
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.
I know that on my 98 cirrus lxi, we blew the PCM thats the powertrain control modul while trying to jump start it, should be located near the fuse box near the fender
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