While we do carry a harness that works with your 2008 Pontiac Solstice, we do not carry a plug-and-play option. For the best option, I recommend using the Tekonsha ZCI Circuit Protected Vehicle Wiring Harness # 119250KIT. This kit pulls power straight from the battery so it will not interfere with the CANBUS or factory setup. view full answer...
For a 2 inch ball to use with the draw bar part # 3593 you would want the part # 19258. For the part # C45025 you would then want the part # C40018.
Both balls have 3/4 inch diameter shanks. view full answer...
Since the shank of the ball mount part # C45015 is solid you'd have to go with a standard hitch lock like the part # TR63254 which will work well.
Then for an anti-rattle device you'd want a universal kit like the part # RM-061-125. view full answer...
I really like the Saris SuperClamp EX part # SA4025F. This is a lightweight platform rack (which is normally an unheard of combo). That means it'll be easy to install and remove from your vehicle since it's light, but also it'll be very easy to load bikes on since it's a platform rack.
This rack also only touches bikes at the tire so it protects any damage to delicate frame materials or finishes.
If you wanted something less expensive I have another option for you to consider.
The most... view full answer...