Hello all, I own a 1995 Chevy suburban 1500 5.7 liter with 250K miles. I posted about a month ago about it not staying running. I finally got around to it kinda needing it for the holidays and being so busy plowing snow and working my other job. I replaced the IAC sensor and the throttlebody sensor, and I replaced the cap and rotor also because the spark looked weak and the to my surprise (not) they were corroded. Anyway it turns over and sounds like it wants to fire but doesn't. Im getting gas and Im getting spark. Ive replaced every sensor in it imaginable and the only thing I can think is the timing chain is done or stretched or something. I am at my wits end with this damn thing and I don't understand how a vehicle with such simple mechanics is so difficult to keep the matinence up. I'm ready to craigslist it, even though its the only means of hauling my entire family with me but I am willing to just cram them all in my pickup. Any ideas???????? I usually don't get stuck, but I am stuck.