Cadillac Escalade speedometer problem

[Bruce Nunnally]

discussion started in comments on the blog and copied here:

denny harrison

17 minutes ago

my speedometer doesn’t work on my 05 escalade esv how can i solve

bwnunnally

9 minutes ago

Hi Denny,

Please post your question in the Caddyinfo forum for the widest consideration and best advice. Here: http://caddyinfo.ipbhost.com

When the speedometer stops working we have to consider causes. Is it getting power? Is it getting a speed signal? Is there a physical issue keeping it from displaying the speed? Does you truck still shift properly? Is the rest of the dash working properly?

Let’s discuss over in the forum!

denny harrison

7 minutes ago

the needle moves but doesn’t regester the correct speed

denny harrison

2 minutes ago

shifting seems to be ok and its not a fuse , could it be a missfire of a censer

bwnunnally

2 minutes ago

Have you changed to different size wheels and tires from stock? That can cause the speedo to read incorrectly. This can be solved by putting in the current wheel and tire size into the vehicle computer using tuning software such as hp tuners.

[Bruce Nunnally]

denny harrison

8 minutes ago

sorry i,m not too good at this dash works

denny harrison

7 minutes ago

thank you i will try that

[Cadillac Jim]

There are also speedometer converters out there that hook on to the VSS and produce a scaled pulse rate to compensate for oversize or undersize tires.