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I am having a problem removing the oil pan i got all bolts off the pan but one screw im having a problem with , how do I remove
57008
 

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2003 chevy trailblazer_ltz
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WHAT is the problem with that screw? Can't get a tool on it to remove it? Screw seized in the threads, won't turn out? Something else?
 

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That STUD (that's what it is - not a screw) has 6-sided hex drive male extensions on it to install or remove it.

Get the right 6-point socket ( not a 12-point 'cause it'll just ruin the hexes on the stud! SERIOUSLY! It will! ) -- and screw it one way or the other.
Or both.​

IN or OUT -------------> it's gotta go.


Great photo though ---- 50 points!

PS - keep taking pixs of you getting that pan out.
I hear it's a bad one to drop out.

57084


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Well-said. The stud has a wrenching surface on top, and on the bottom. I bet it takes a TINY hex socket. I suppose it could be Torx, but it doesn't look like Torx in the photo.
 

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I do not believe it is a Torx®, but a regular hex.

This is the same design as the exhaust header-to-flange studs on V8 small block Chevys.
In the back of my mind it might be the infamous 5.5mm. My mind has been wrong before .................

Chevy manifold studs:
57090
 

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Just as an FYI, Autozone normally stocks both a regular and a deepwell 1/4" drive 5.5 mm socket.
 
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