I've had one episode recently of complete shutdown of the speedometer after
watching it hiccup around 65 mph. The rest of the instrument cluster was
fine as far as I know. The next morning it worked fine and it's been fine
for the past 2 days.
My usual dealer said it would cost at least $300 to replace, but they don't
recommend it since I don't have an extended warranty and it's working OK
now. Another GMC dealer in town said they feel badly that it has failed and
it will fail again. They will replace or repair it for free knowing I have
no warranty left. The truck has 51,000 miles 90% of which are highway miles.
Any thoughts on what to do? Sometimes a kind offer is just a kind offer.
Sometimes there is a hidden agenda. Sometimes you should just leave well
What's going on with the Sierra's speedometer? Is it a known problem?
It's a well known problem, endemic to the entire full sized '03 to '05 GM
SUV and truck line. My '04 Z71 Avalanche did the same thing at 42,000 miles
and off warranty. The culprit is the stepper motor in the cluster. The cure
is a GM remanufactured cluster with a new improved stepper motor. I
complained to the service manager, they called GM's district rep, and the
entire repair was covered under their Goodwill program. Was told it would
have been about a $450-500 repair with the remanufactured unit. Cluster
replacement is 20min. It's $1300+ if I wanted a brand new cluster. Service
manager also said he sees about 3-4 of these per month , mostly late '03's
and '04's. GM started putting the better stepper motors (presumably switched
suppliers) in the cluster sometime in '05. So my advice is to see the
service manager, and get them to do call the GM rep.
Thanks, Augustus. Appreciate your quick reply. It's disappointing that the
dealer that has always taken care of me now wants to charge, but that's
business. I guess the other dealer is willing to acknowledge it's a known
You're welcome. I was lucky that my local GM service manager was helpful.
It's a small town, and I've bought 4 vehicles there over the last 6 years,
but that doesn't always mean a whole lot. When it happened on my truck I
started digging, and there's tons of Chevy truck web forums with stories
just like your and mine. It should be a recall, not "you bitch, and maybe"
For what it is worth, you might consider taking it to a speedometer
shop. I had some issues with my 2000 K3500 being off about 10 to 15%
when new and after a few swaps with new GM supplied units under
warranty and attempts at reprogramming ECM they pulled speedo out and
sent it to a speedo shop and "fixed" it for good.
Dayton Speedometer fixed mine for dealer and they have been around for
a very long time. You might call them up (you can find number on line
as I do not want to realy post it) and see what they have to say about
speedo problems on that model as they are very knowlegable even if you
do not buy anything off them.
Curious that the inventor of GPS with an EE "background" with a
second, more illustrious career as a snow shoveler would need to
resort to vending out the repair of something as simple as a
I'm sure you are well versed in the need for a bib. Given all the crap that
comes out of your mouth one can only imagine what goes into it. Well,
actually I think I've a real good idea what goes into it.
Yeah he should "grow up" because he's so "inmature" and such an
"insecure" "child" right?
The never ending delusions posted by Snoblower continue to amaze and
Oh and the "grow up" count is up to 10 now.
So, what you're saying is; as long as a failed part presents just
one simple symptom, you feel safe making a repair, but if a
single failed part presents multiple symptoms presenting
themselves in multiple components, your brain goes into overload
and can't process the clues leaving the only solution as "trade
This is a common problem with the clusters around those years. The tach on
my 04 is starting to click indicating it will fail soon as the clicking is
an early sign. Its common enough that people are offering to repair the
cluster or sell the replacement stepper motors on ebay now.
Well, my local dealer decided to replace the speedometer cluster without
charge. Now I'm wondering if the tach on the replacement model will go out.
I've noticed a bit of "weird" behavior in the replacement tach. Nothing
major, but the movement seems a bit more noticeable than on the original. As
much as I love this truck, I'm wondering if the new '07 GMC or Toyota Tundra
might be a better bet for longevity. These clusters shouldn't be failing in
a $34,000 truck, IMO.
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