The tach on my 2003 HD 2500 started malfunctioning right after I turned over 36,000 miles. I took it to the dealership and was told that it would cost $400 to replace something in my wiring harness. I said "no thanks" since I don't rely on it anyway. Now my fuel gauge, volt gauge and speedometer are starting wig out on me, too. Has anyone else had this problem?

 

wow, that sounds like some bad luck...wish i could help, honistly

 

My 04 speedo started acting up at just over 36k as well. Sometimes it will jump to 20 or 20mph over the real speed. If I start the truck and turn it off about 3 or 4 times, it works it's way back down to 0.

 

Hi there unfortunately this is a very common problem with these trucks. If you were to go to the dealer to have this repair done your looking at about 500.00. However there is another solution its the motors that run the guages that are bad. I am selling these motors in a kit with complete instructions with pictures and everything you need to do this job. Motor or Motors soldering iron instuctions and solder. The motors are the same for all the guages (speedometer, gas, temp, oil, volts, trans temp)on 03 to 06 Silverado, Sierra, Trail Blazer, Envoy, Suburban, Tahoe, Yukon. Please feel free to email me with questions re the availability of these kits. They should be available soon on EBAY but are currently not listed. Price is 100.00 for a kit with one motor and 135.00 for a kit with two motors. I personaly did this job on my own truck and it was very simple to do.
Bobbie
mssamericannpiee@aol.com