I crawled around under the truck on Sat for a while looking for the ground straps. I also went through the assembly manual several times and only came up with the engine to firewall locations. I found 4 of them but could not find the last one ( if you buy any of the kits you get 5). With help from some folks on here and an email to GMCPaul, I am hoping this last one will do the trick. I used the book for the engine locations, sorry I am still working under the truck. Pics 1 and 2 are the V8 and I6 locations. Pic 3 is in front on the pass. side inner fender. Pic 4 is under the pass. door about halfway. Last one is from GMCPaul and Shyguy, pass. side behind the tire. I hope this will help those that need it. I searched on here and the web and did not find much info other than the firewall locations. A thank you goes out to those who helped with my other thread.