2005 chevy silverado /speedo

[1968 nova ss]

My speedometer on my 2005 chevy silverado went from a cruisin speed of 70 and then it went instantly to 120mph ans stayed stuck there for a few days .now when I start it up some days it s on 10mph others days 40mph or whatever.It is working ,just not correctly.any ideas.chris

[bpodner]

There was a tsb for GM instrument clusters a while back, don't know if it's still valid. The speedo did the same thing on my 03 Z71 Suburban. After going round and round with the dealer, and reporting it to the NTSB, the tsb finally came out. The work around is to cycle the ignition key on/off, this brings the speedo down to 0 in 5 mph increments. There used to be a guy on ebay that rebuilds the clusters for a lot cheaper than GM, try a search he had a lot of good feedback. The stepper motors are what goes bad.
By the way, that vehicle was the last GM vehicle I ever bought, a $50000 POS.

[TORONADOXS]

Common problem. Replace the cluster and move on. It will also need to be programmed, if you are thinking of doing it at home.

[Chateau Slate 66]

x3... cluster

[YenkoYS-199Stinger]

I have the same problem with my 05' Duramax and my tach does the same too. Sometimes I have one or the other and sometimes neither.

[MosportGreen66]

My '03 Yukon did the same thing at around 85-90k miles.

[ORIGLS6]

I'm dealing with the same issue. On my way to Rosemont I glanced at the speedo and was shocked to see I was running 135 @ 2200 RPM.

Below is a link to a guy who repairs them for $169 ($189 for the entire cluster) including shipping BOTH WAYS!

In the mean time there's a 'reset' proceedure you can do. Turn on the ignition and click the key forward just shy of engaging the starter. Each time you do this the speedo needle will work its way back toward zero. It may take five to twenty clicks depending on where the needle sits. Mine works correctly for days, then out of the blue it goes nuts again. And most recently, it worked its way back to zero on its own! Go figure. And FWIW, my local dealer told me I'm looking at $600 to $800 for them to do the fix.

Go here.

[Jonesy]

I used this guy in Minnesota. Turnaround was 3 days. lifetime warranty for $125.

507-429-4489 OR EMAIL AT [email protected]
Dave Ruberg.

http://cgi.ebay.com/ebaymotors/GM-SLIVER...sQ5fAccessories

[Jonesy]

They are easy to take out and unplug by yourself. You can also still drive the vehicle without it. I used my GPS for figuring out my speed. Got it back and put it back in. was virtually painless.

[ORIGLS6]

[ QUOTE ]
My '03 Yukon did the same thing at around 85-90k miles.

[/ QUOTE ]

And FWIW, my local dealer told me GM is covering the '04s up to 90K miles, but the '05 models up to 100K. Seems strange to me but then common sense is pretty rare these days!