Flywheel won't turn crankshaft

G

G-338445

Hello everyone, I have a question about a problem with my 2005 Silverado 2500 hd 6.0l. For some background, I managed to get the truck back from a mechanic I had working on it but I had to have it towed back to the house. He was doing stuff that I didn't authorize him to do and I'm not sure what all was done. He said it wouldn't crank because there is a problem with the flywheel - which is something he wasn't supposed to be messing with anyway. The truck was running when I brought it to him to change out the wiring harness on the engine. Anyway, I replaced a couple of things myself, the last one being the starter because it was bad. Now the starter works; it engages the flywheel and the flywheel turns but nothing is happening with the engine. It's not trying to crank at all. He may have replaced the flywheel because it looks good to me - all the teeth are good, nothing cracked or broken that I can see. But it's way to easy to turn. I can do it by hand with no problem.


I'm not a mechanic, but from my research I know that's not right. It's not engaging something to turn the crankshaft. The engine is not frozen; I can turn it from the front center pulley and everything moves fine. So what could be the problem?
 

zora

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Hello everyone, I have a question about a problem with my 2005 Silverado 2500 hd 6.0l. For some background, I managed to get the truck back from a mechanic I had working on it but I had to have it towed back to the house. He was doing stuff that I didn't authorize him to do and I'm not sure what all was done. He said it wouldn't crank because there is a problem with the flywheel - which is something he wasn't supposed to be messing with anyway. The truck was running when I brought it to him to change out the wiring harness on the engine. Anyway, I replaced a couple of things myself, the last one being the starter because it was bad. Now the starter works; it engages the flywheel and the flywheel turns but nothing is happening with the engine. It's not trying to crank at all. He may have replaced the flywheel because it looks good to me - all the teeth are good, nothing cracked or broken that I can see. But it's way to easy to turn. I can do it by hand with no problem.


I'm not a mechanic, but from my research I know that's not right. It's not engaging something to turn the crankshaft. The engine is not frozen; I can turn it from the front center pulley and everything moves fine. So what could be the problem?
He removed the bolts attaching the flywheel to the crankshaft would be a good starting point.
 
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