Remember that "Registering with GL" is NOT the same as the initial steps that you have to go through when submitting your first bid in a GL auction. Therefore, allow yourself time to complete this early in the auction - don't wait for the last minute to jump into the bidding on the truck you want. Otherwise, you may be delayed in submitting that last-minute bid beyond the Closing Time!!!
Also remember that GL is NOT like eBay.... Many bidders on eBay wait until the very last minute (or even the last SECOND) before an auction closes to submit their final bid. Often this results in a successful eBay bid slipping in and winning the auction. WARNING: GL IS DIFFERENT. When late GL bids are submitted they AUTOMATICALLY extend the auction close time by 15 MINUTES, allowing your competitors a chance to rebid and also extend the auction by yet ANOTHER 15 minutes. This can literally go on - over and over again - for HOURS!!!! Waiting until the last minute therefore IS NOT ADVANTAGEOUS with GL AUCTIONS.
Submitting your highest Auto-Bid is an option that will automatically bump competitor's overbids until your highest bid (your budget) is exceeded.
Hope this helps.
Good luck!