Oil drain plug size

[TraciM]

6 hours ago, BigBlueLB756 said:

Sorry to be a bubble-buster, but don't confuse bolt head size with bolt THREAD size.

https://www.ebay.com/b/Oil-Pans-for-2017-Chevrolet-Silverado-1500/38657/bn_7063101279?Engine=4.3L 262Cu. In. V6 FLEX OHV Naturally Aspirated&Engine - Liter_Display=4.3L&Submodel=WT&Trim=WT Standard Cab Pickup 2-Door&maspect=contextType%3ACAR_AND_TRUCK

 

And NEVER try to force something in where it won't go comfortably.  Get some ramps, too.

I don’t need no stinking ramps! ? There are advantages to being of a smaller stature...I have a 92 Ford Ranger also with the dual spark 4cyl and I’m the only one who can fit my skinny arms in there to get the back plugs out! Oh, and I taught my husband how to work on cars! Caught him trying to put a Left caliper on the Right side of his 78 Trans Am. He’ll never live that down! ?

[BigBlueLB756]

But he could really stop when he was backing up!

 

Welcome to the forum, if I might be so bold.

[kreepa44]

15mm is the drain plug head & socket size. 12 X 1.5 mm is the drain plug thread size. This has changed in the past, so it is best to confirm with your vehicle’s model and year of manufacture