Rob Smetts

I have an 02 Sierra 1500 sle 4.8l. I've tried just about everything. Researched this issue numerous times though it seems to happen during season change. I've replaced key cylinder, computer, alternator, starter, battery, checked wires, fuel system, fuses/relays. I bought a code reader and have done the relearn process with the new computer. Replaced the wires at the lock cylinder as well. The only thing I haven't done is replace the cylinder housing you've mentioned, you seem to know what your talking about. I will try this and let you know. Granted my truck has 367,000+ miles on it and I probably could use an upgrade. I hope this works!