What will stop truck from turning over by hand

BIGDADDY1968

MEMBER
2006 GMC SIERRA
105,000 MILES

Truck was running fine and stopped one day on side of road, it cranked back up went a little more then quit, got it home and it turned over real slow and made a rubbing noise, cranked for a second but won't turn over, did turn over a little today, can't turn over by pull bar on the crank pully?

7 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Check oil level.

Was there any noise prior to this?

Do you have a gauge in the truck?

Roy

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Saturday, September 29th, 2012 AT 5:47 PM

BIGDADDY1968

MEMBER
4 POSTS

Oil is good, no noise and yes truck has gauges

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Saturday, September 29th, 2012 AT 8:27 PM

KHLOW2008

MECHANIC
41,814 POSTS

Try reversing the turning direction of the crankshaft to see if you can move much. Seems like you could have a fault with the timing chain.

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Saturday, September 29th, 2012 AT 8:37 PM

BIGDADDY1968

MEMBER
4 POSTS

Cant turn either way, would broke timing chain keep it from turning over?

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Saturday, September 29th, 2012 AT 8:50 PM

KHLOW2008

MECHANIC
41,814 POSTS

Can't turn it either way can mean a seized engine due to lubrication faults. A broken timing chain would normally allow you to at least reverse the turning direction slightly unless the chain is stuck badly.