MARSC6

Did it start now? Certainly looks like you found the problem.

615C6

Still no start. Im going to try programming my spare ECM tonight and see what happens.

615C6

It's alive! We can finally put this thread to an end. Reprogrammed the new ECM and theft deterrent today. Did the crank relearn also. I'm assuming my nitrous solenoid was the culprit. My nav unit shorted out and my PCM was bad.

sallen619

RWSjr

Glad you got it going. I also had broken wire on seat. While sitting in seat, nothing worked, get off seat all fine... Later car dead... all dead. After BCM swaps etc, nothing. Started checking out individual modules and found Nav unit the problem. Thought the seat issue was BCM related, it was not, just a coincidence. (Everyone: "how come your car won't start"? Me: Radio's busted...)Had to get a new one. True story... BTW it broke down at a 7-11 2mi. from the house. No big deal right? I was gassing up on my way to Florida late at night...Whew, Could have been worse. So, i feel your pain, and your relief that it's alive again.
p.s. sorry i didn't see the thread till now, would have been the 1st thing i would have suggested

Z06_N_SD

Hallelujah!!! Good to hear.

Twowheelin_wildman

Good to hear!

Poor-sha

I assume you needed the Tech 2 to reprogram the theft deterrent? I'm pretty convinced that is what's caused my sudden inability to start. I don't think the message to engage fuel delivery is getting to the ECM even though the RCDLR clearly recognizes the FOBs enough to lock/unlock the doors and allow the starter to engage.

At this point I'm looking for a semi-reasonably priced Tech 2.

08 ATOMIC-Z

Question for you....Did you have a passenger when this happened? If you did they pushed on the floorboard and caused a partial disconection of your high speed DATA BUS. If you push down on the two big blue connections on the BCM more than likely your car will act correctly for a while. You will find about 45 codes if you hook up the tech II. I had 5 of the pins loose in these connectors and it drove me crazy for a year +. The car would run fine and then no gages or the A/C would quit and the car would think it was no gas or no ABS ect. If it had not been for a great tech at my local dealership I would never figured this out.

615C6

Thanks everyone. It was indeed just the nav radio that killed my class 2 line communications and PCM. My nitrous solenoids are fine and working great. Hope this thread helps others down the road.

615C6

I doubt it's your theft causing your issues. The first thing I would check is fuel relay signal or check for fuel pressure.

Poor-sha

Yeah, I ended up just buying a Tech 2 on eBay. Now that they're discontinued there seem to be a lot of them up for sale. No codes as you predicted.

I did disconnect the fuel line and command the fuel pump on. Fuel is coming out but I don't know if it's enough pressure. The fact that it typically fires for a couple seconds means I must be getting some spark.

615C6

I would double check make sure your getting spark. Also get a fuel pressure gauge hooked up and read the pressure at the rail.