Problem with speedometer

[DennisAJC]

HAHAHA!!! Hey Kong. Where have you been?

[HummerLV]

i had a simular problem with my RPM gauge, one day started truck and the RPM went to redline at idle, restarted truck and the needle stuck at 4500.
time to call dealer, they replaced the whole cluster under warranty, $650 or so, told me the new cluster would have to be VIN coded to my truck.

here is what "mygmlink" said after service repairs.....

CLUSTER ASSEMBLY, INSTRUMENT PANEL - R&R OR REPLACE, INSTRUMENT CLUSTER-ASSEMBLY RETURN TO AC DELCO ESC

[wilfred]

Yeap, sounds like the whole instrument panel cluster needs to be replaced. Hope you are still within warranty? If not, it's not cheap. Here's another one:

http://www.elcovaforums.com/forums/s...ad.php?t=21132

If you are out of warranty, talk to your dealer anyways because I got mine done even though I was out of warranty. I guess it all depends on the dealer or how much business have you given to them before.

[Arizona Hummerboy]

My speedometer went out at a 110 MPH. The funny thing I was driving around town when it went out. Took it into the Dealership and they replace it under warranty

[mrmayhem]

This happened on my 03 Avalanche... the speedo (which is the same as the H2 for the most part) has a microprocessor driven stepper-motor. This stepper motor is most likely your problem. This motor can be replaced... but with tracking down the little stepper motor and replacing it.. it may be easier to just Ebay another entire cluster gauge.

(my avalanche - the speedo needle would sometimes "hang" in one place, or just go erratic......... After a couple months of this.. it would go up to speed.. then slowly work its way to zero)