hey guys i noticed you talking about the rcm i thought it was the power control module maybe thats y i cant find the part any were accept ford for about 3 bills... but ill get to the point ,my car wouldnt stay running so i tract it to the iac or idle control valve so i thought so i put the new 100 dollar part in and to my surprise it wasnt the problem so now i tested it and i wasnt getting anything from the pcm or rcm so i bought a used one from ebay but it works but not how it should ill turn the key and the rpms will fluctuate untill it finally finds the right setting and it shound nt do that im used to starting the car and it running strong right at about 800 rpms with out any flucuation so any ideas ...should i just buy a brand new r.c.m....? ++MOD NOTE: I moved your thread into a new post. Adding a post onto a 2-3yr old thread creates confusion+++

I'm getting ready to put new tires on my Suburban so I got a few quotes from a few tire stores. At one of the stores, the guy recommended I have the tires "siped". According to the information he gave me, siping improves performance and extends tire life. I was wondering if anyone has had this done to their tires, and if so, what the results were. The guy did say that siping was not recommended if you drove more than 15-20% of the time on dirt or gravel roads. I don't, but I'm not sure I feel real positive about the potential for tire damage. What do you guys think? Thanks!