Thanks and Happy New Year to all!

[Baldy-Old-Troll]

I would like to wish you all a Happy New Year, and to say thanks to all who post such useful information on this forum. My speedo on my C5 died last week , so I checked the forum for info and was able to use that to diagnose a failure of the head motor, most likely the gearing. I checked the local main stealer for parts availability, and was told the motor is not available on its own, have to buy the whole display, £600 or £700 please! So a quick trip to my local scrappy and £25 later I had a set of clocks. I removed one of the motors from the scrappy set and used it to replace the faulty one on my C5, It worked perfectly, so thanks for all the time and effort you all go to to post this valuable information. If it is of interest to anyone the reason for the failure on my motor was that the pivot pin for the green sprocket had snapped.

Thanks

Stuart.

[cachaciero]

Bit late now but almost certainly the failure of the original motor was due to shearing of the plastic shaft that carries the intermediate gear (green on mine bur could be other colour) The shaft can be replaced by a suitable sized drill bit as close to 1.15 mm dia as you can find, you use the drill to carefully drill the plastic case to hold the new spindle and then snap the shank off the drill to use as the spindle, blob of epoxy on each end job done cost about 25P.

EDIT
Should have read the OP more carefully as regards the failure

cachaciero

[Baldy-Old-Troll]

Thanks for the details of the repair, I'll probably try it on the damaged motor, but I just replaced the motor as I needed the car fixed asap. It's posts like that which I really appreciate, clear ,concise instructions as to what is wrong and how to fix it .Thanks again.

Stuart