Is it an OEM speedo? Maybe check the plug/connector under the tank, but if its intermittent its probably going, mine started to act like that and I just replaced with a Dakota Digital. The speedo itself does not come apart without ruining it, the chrome bezel on the front is crimped around the housing.
Good luck, lets us know what ya find?

Not really a Guru, that's a title ya get after so many post's, so I guess that makes me a post whoreYes it's Oem, will check, Thank you Guru!
but as far as the speedo, many of us have experienced and replaced the speedo.


Mike, just edited my post...make sure you go a FULL 2 miles....Thank you all!
If everything was installed correctly...calibration should still 'hold'.I just installed Docs new harness and computer
DO IT NOW ERIC DO IT NOW!!! hahaha...and your speedo will work fine again....lol....Interestingly enough on my stock 04 speed it only sweeps to about 20 MPH then back but still gives me the right speed when running. Never tried the calibration however
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Still works fine so how about NOPEDO IT NOW ERIC DO IT NOW!!! hahaha...and your speedo will work fine again....lol....
Still works fine so how about NOPE
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If it ain't broke...don't fix it...Do NOT overthink like I do a lot....What else would let speedo lose memory or calibration?
