my speedo quit on the way home from school, wouldnt shift into OD, and is making a horrible ticking noise sounds to be commin from right under the cab, i drive this thing a lot and i need it back on the road asap, and help or opinions are greatly appericated! thanks a ton,
cody

 

Check your vehicle speed sensor

 

Yup speed sensor or its drive. For the clicking, check the driveshaft slip joint. I've heard them make that kind of noise before. Also check the u-joints, you could have a dry one starting to go.

 

where is the speed sensor and how do i check it, any other ideas on the nasty tick knock tick noise?? i really need this fixed

 

There are several pics of the VSS on here , search for it and there are a couple good threads on how to test it and replace it and what commonly goes wrong with it..

 

If all that happened at once check the speedo gear at the output shaft

 

it was making that knock tick noise for about 3 days b4 but wasent bad at all then the speedo wnet crazy 2 days ago, and the knock is nasty!

 

Just a thought, but check the output shaft nut for tightness. If loose, it could, in theory, cause a ticking, and once loose enough can cause the VSS to stop working..
you have to drop the drive shaft to check it, but it might be worth doing.