Blackwing: Fixes

Fix	Description
Battery Tender	Battery Tender Connection
Cargo Net	Custrom Cargo Net
Lug Nuts	Lug Nuts Upgrade
Magnetic Oil Drain Plug	Magnetic Oil Drain Plug
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Battery Tender Connection

Here's how I wired a Battery Tender maintenance charger.

Positive Terminal	Negative Terminal

Custrom Cargo Net

I have the factory cargo net in my 2007 Z06 (GM 10321693) and I love it. I also had the factory cargo net in my 2014 CTS-V.

My Blackwing order included the RPO W2D cargo net. It is ridiculously small (and ridiculously expensive) so I figured out how to install a C6 net in my Blackwing.

One problem is how to attach it to the car. I replaced the trim retainers (aka "christmas tree" clips) with spring nuts and "tie down hook ring" clips.

For the "cargo net hooks" I found some on ebay that have a plastic "T" on one end and threads on the other. I see that amazon has something similar.

Dorman calls the spring nuts "metal clip nuts, U-type". The 1/4" size worked best but unfortunately you have to buy two 961-310D assortment packs to get two of them.

Cargo Net Retainers	Clip Nuts	Clip Nut

The other problem I ran into is that the cargo net attachment points are closer together on the Blackwing compaired to the C6 Corvette. I solved this by tieing two knots on each side of the net.

Knots	Installed

Lug Nut Upgrade

I've yet to meet anyone who likes the sheet metal wrapped OEM lug nuts. They are universally hated. It's just a matter of time until your tire technician spins the sheet metal with an impact gun. My Blackwing came with M12 X 1.5 stainless lug nuts (and lug nut locks). I decided to preemptively replace them and since my wheels are satin graphite I switched to black.

In the past I've used McGard but the RPO SPY black lug nuts (GM 85553525) are actually nice. Instead of ordering as a $275 option, I paid $100 less and installed them after I got the car.

Lug Nut Set	Lug Nuts Installed

Magnetic Oil Drain Plug

In early 2007, GM switched from using oil drain plugs with a magnetic tip to drain plugs without. The obsolete part number for the OEM version is 88891787. These pop up on ebay from time to time. The threads are M12 X 1.75. These are also available from the aftermarket, e.g. the Dorman 090-936CD.

A magnetic oil drain plug will pick up ferrous metal particles that are smaller than your filter can trap as well as those that it can trap. Since I don't always cut my filters open they give me a quick check for junk that might be in the oil.

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Craig Leres