Suburban wont start... any ideas?

My 97' for the first time today refused to start... It will crank over fine, it just wont catch. I tried starting fluid... (I know, I know) and still nothing. I can hear the fuel pump turn on and the battery if fully charged. Pulled the passanger side front plug, no spark, nothing. The plugs/wires/cap/rotor are less the 2 years old and it ran fine all day yesterday. So... ideas? The coil maybe?

i would pull off the coil wire and see if its getting any spark.. if not then check the plug to make sure its getting a signal.. i dunno what the weather has been like around you but moisture in the cap will cause a no spark.. if you have spark at the coil then pop the cap off and check it out.. sometimes the center pin will burn up after it gets wet.

I've known the coils to go bad. I can't add anything, as Joe summed it up perfectly.

I really hate trucks some days....

Alright, checked the coil. Its building a charge but not discharging it. So... ignition control module seems to be the culprit. I'm going to pull it out and take it to autozone tomorrow to get it tested.

easy enough to replace.. mine went bad on my jimmy and i replaced the coil and that at the same time..

stupid tune up parts

Mike

Good luck Robert, hopefully you've found the issue.

Well it seems I'm a day late and a dollar short because that's what I was gonna say was the ICM samething happened to my brothers S15... You gotta love HEI systems huh! lol

I ended up taking a personal day to try and get this fixed. Got the ICM off, made my way over to Autozone and low and behold, its dead, very dead. But as much as that sucks, at least I know its the problem.

Do I need to replace the coil at the same time, or just the ICM?

just the icm. i replaced my coil at the same time cause i knew it was due.. 123k and all my electronics wanted to die.. weather they were brand new or not. lol

Gotcha, thank you everyone for your help.

Glad to hear you got it fixed!!!

Not yet Fasel, still got to order parts. But thanks for the kind words.

Oh haha I thought that's what the personal day was for... Yes order the parts fix it then go back and read my post!! haha

the right order for chevys are.. order impossible to find parts, get them and relize they are the wrong ones, return and wait for new ones, get pissed off cause they have metric and standard bolts and you keep grabbing the wrong wrench.. throw it through the windsheild and then finally get it fixed and running.. then relize you cant drive it around with a busted windsheild so you have to put more money out just to drive the darn thing.. lol..

^ Amen.

Holy crap Joe, I havent laughed that hard in a while. Thanks!

On another 'funny' note. I decided to try my luck again with the Suburban and tried to start it after reinstalling the old ICM. Turned the Key.... BOOOOM! I guess I didnt get all the ether out..... Huge cloud of smoke out of the air intake, and it blew the PCV valve out of its grommet. Anyway, now its just a waiting game for parts.

lol.. way to make it go pop.. hopefully you didnt damage any valves or hurt yourself..

Yeah.....hopefully you didn't mess up some valves..

I think (I hope) its fine. I cranked it over this morning and no weird noises. Parts should be here in a day or two though!

****!!!!

Ok, put in the new ICM, charged the battery, and hooked up jumper cables to my 03', turned the key..... and it still cranks, and wants to fire, but still wont start. I checked all the cables, plug wires, etc.. I am getting spark, fuel, and air, but it won't start? Help!

Try holding the pedal to the floor. Worth a shot....

Oh dont worry, dam near pushed it through the floor!

did you check each plug for spark or did you just check it at the coil.. like i said before you could have a bad distibutor so by checking each spark plug you will see where its screwing up..