I've been chasing what started as cruise control kicking of then a u0100, shifting funny, and that became a no crank no start. cleared it out and she fired right up. I started chasing wires under the fuse box and found 3 questionable splices. I corrected those and it was perfect for a week. then it started doing it again. I had a friend bring over his $10k snap on scanner, and concluded it was probably a faulty speed sensor. I replace the top one, no change, so did the bottom. $140 later and no change. After seeing this I went and looked, sure enough mines cracked and the connections are really nasty. Parts are on order, no one had it in stock. Even if they did it was $20 and a 3 day wait. I just ordered It, wish me luck LOL.
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it's a Pontiac G3. that wasn't it sadly. After doing everything I could think of I took it to the dealer. $400 later they said they are 95% sure the TCM is failing. Sadly they no longer make a TCM for an 09 g3. I'm ordering a junk yard part off ebay. If that fixes it I am selling the car LOL. Thats the automakers plan. stuff these cars full of junk they don't need and stop making parts. That forces good cars off the road. @@TheInteriorAutoMechanic
Hi there! While I didn't run into a crank no start I suppose this could cause that since it is holding so much resistance in the wire. Be sure to check fuel, spark, and compression.