on my 2005 silverado 1500 the speed needle stop working the rest working fine. anybody help

thats an electrical problem either a defective speed sensor (in the trans) or a bad gauge its self hope this helps

Hello, this problem is due to a failing stepper motor. The stepper motor is the motor behind the gauge that controls the movement of the needle. When a stepper motor begins to go out it will cause the gauge needle to stick, skip around, stay at zero or max out on the gauge. The only way to fix the problem is to replace the stepper motor with a new one. While replacing one motor it is best to go ahead and replace them all as the others will go out in time as well. Youre cluster will have one motor for each gauge. Here's a link to a page showing exactly how to replace a GM stepper motor and where to get the correct parts to do the job! Search Google for DrSpeedometer to find more info and how to get it repaired.

If the motor is fused check for a blown fuse as well. It could be an internal fuse panel, or under the hood.