89 Suburban 350 won't start

Check for fire first and the ignition control module in the distributor are known to fail without warning sometimes and would be the first place I looked if there is not fire . BTW, I have a 89 4x4 burb that I have had since new that has 173K on it now and still looks and runs great.

Pull the coil wire off the distributor, stick a screwdriver in the end of the wire, hold it near metal and have someone crank the engine over. If no spark, module is a good place to start, then again the pick up coils go bad as well, and the magnets that trip the coil into producing a current that cause the module to fire the coil crack and cause no start problems too.. If it has spark, put the coil wire back on the distributor and pull a spark plug wire off a plug, again the screw driver in the end of the wire and hold it near metal, someone crank the engine. If no spark change the rotor in the distributor.

Whitelightning

I had an '86 Silverado that did the same thing. It ran fine when I pulled it around to my shop. I tried to start it again and *nothing* all it would do was turn over. Well, after some head scratching, I took the dist. cap off and what did I see? The rotorbug in about a hundred small pieces... that's what! I never could figure out why the rotor would EXPLODE like it did, but I changed it,(along with all other ignition parts) and it ran just fine (as far as the ignition timing) and then about a month later, a colorblind idiot pulls out in front of me and TOTALS my poor truck.

ZZZ

Many many thanks to y'all. I will try all of these things this week end and let you know what happens.

Glad to hear you got it fixed!

ZZZ