Vortec-Z71

Still looking for this

Hi, does anybody have an OEM GM Accessory Silverado or Sierra soft tonneau cover laying around for the 5.5’ short box? I don’t care about the shape of the tonneau itself. I am in need of some of the hardware which is now discontinued (as is the full package from GM) but will buy the entire thing from you. The original part numbers were 12498862 for Chevy and 12499097 for GMC. Please let me know. Thanks.

I forget the exact extension size other than the 24" one I had to go out and buy (everything was regular not wobble). I can't recall the exact nut size either but I want to say 13mm. What I did was go to my local dealer and buy a brand new nut by looking it up in the parts catalog and found the size that way so I didn't have to play around with it. Plus I wouldn't be dealing with a rusty nut when installing the new lines and you can put anti-seize on it easily. The Dorman install guide below is a decent summary but lacks a lot of detail. It makes it look much easier than it really is. https://www.dormanproducts.com/p-90300-919-840.aspx?year=2003&make=Chevrolet&model=Silverado%201500&parttype=Fuel%20Line&origin=YMM

I replaced the fuel lines with the same Dorman kit on my 03 a few weeks ago. I started by removing the front drive shaft. It should only take a few mins. That allows for a lot more room. I then used a 24" extension, a u-joint socket adapter, a small extension, another u-joint socket adapter, and finally a deep well socket (my regular one wouldn't grab the nut with the length of the stud). This gave me the flexibility I needed for the tight space. You have to be at just the right angle to see the nut. I used one hand to turn the ratchet while the other guided the socket over the nut. With my hand in there, I could no longer see what I was doing but instead did it by feel. It is not easy but doable. Also make sure to use penetrating oil a few days before. The nut shouldn't be torqued that tight but with rust, dirt, etc. it helps. On that same Dorman kit, I also had an issue with the metal connector where the rear and mid feed lines connect. The flares on the lines were too long and didn't allow both nuts to be fully seated at the same time so I had to grind a few mm off in total. Be sure to check for fuel leaks after starting as mine was spraying pretty good when I found this issue on first startup. Chris

I know GM didn't make too many. It was a really expensive option so it wasn't too popular. Supposedly it's a really well designed system though.