I have a 2002 Firebird with the 3800 series 2 engine that cold cranked before starting. Just recently my wife was backing out of the driveway and the car died. The car had a reduced engine light on that I had never seen before. I pulled a plug wire and put a spark plug into it to test for spark there was nothing, I also tried plugging into other coil packs still no spark. I then thought I would remove the 3 coil packs to get to the ECM ( Engine Controll Module) that is located under the coil packs, the coil packs bolt onto it, (make sure you mark each plugwire with the firing order on each coiI).brought the ECM to Autozone and they tested it and it came back good. I put it all back together and still no spark. I then pulled the camshaft pulley to replace the Camshaft Sensor put the car back together and no spark, I then reset the computer by disconnecting the negative post on my battery and let the car sit overnight to reset the computer. The next day after researching what could be wrong , I learned that I had to reset / relearn the computer. I hooked the battery back up and went in the car and turned the key to auxiliary and waited two full minutes, then turn the key back and take the key out of the ignition and wait 10 seconds, then try starting your car, this allows time for your computer to scan everything (Mine started right up). Important if your car does start Do not rev your engine or kick it down right away when driving or it could affect your gas mileage( The computer is relearning you car during your first few drives, If still no spark check the connections to your computer for corrosion , my computer is on the passenger side by the firewall under the hood. If there is any green on the connections you can spray clean it with (electrical cleaner Only) from the parts store, you can also do a odor test on the computer to see if it smells like Something fried out. you will have to make sure you mark where all the wiring harnesses plug back in, and do the battery ignition key thing all over again. Hope this helps. Also if there is a security anti theft light on that would prevent spark and you can YouTube on how to bypass it with a wire. (I am no professional mechanic just a good do it yourselfer).