Hi Guys !

Happy Holidays To Eveyone ! I Have A 2004 5.3l Silverado I've Done Quite A Few Modifaction . Like Putting In A Procharger System And A Few Body Mods .. My Question Is . While Driving Down The Highway At About 70 Mph I'll Hit The Gas The Truck Down Shifts Then Back Into Overdrive The Speedpometer Go's Up , But When I Slow Down The Speedometer Stays Up And Won't Come Back Down Until I Diconnect The Negative Ground .it Doesn't Do It All The Time , Just Once In Awhile .. What The Hell Is Going On ? Any Help Will Be Appreceated..

 

You will have to replace the cluster...... No other fix to it.

Jim

 

hit the nail on the head

 

yep, what they said. My 04s speedo is pegged at 120... permently.

 

Mine always says 0... If a cop ask my how fast i'm going i'll tell him 2k rpm.

Dealership should be replacing mine in the next few weeks

 

yep mine was replaced at around 30k... Dealer didnt redo my hours though..

 

Mine is doing the same thing! Mine just did this for the first time tonight! I thought I was doing 70 w/ the cruise on, but a cop said I was doing 85. gotta go get it fixed tuesday.

 

This could be your fix

http://new.photos.yahoo.com/jamesang...803856926902/5

Jim