Actually, one could work the figure up to $4,000 if you played your 'card' the right way so to speak.
I believe this is how it could be done. I gathered this information in a long talk with a GM card representative the other day. See, I'm coming up on my seven year anniversary date and wanted to know how my earnings were going to expire. After the seventh year, and during the eighth year, the earnings will expire month by month as they were earned seven years earlier. She even read to me a month by month series of earnings that would expire.
But here's the kicker as she explained. As the eighth year begins, and earnings begin to expire month by month, one remains eligible to earn up to $500 in earnings for the current new year, the eighth, sort of. So conceivably if one earned most of ones first year earnings in the later months of the first year, and then accumulated the eighth year earnings quickly before any of the seven year old earnings started to expire, one could push the total earnings up to $4,000 for a time.
I believe I was getting the straight story. I asked a number of questions and the answers seemed to confirm this understanding. The clincher was her statement that for most accounts that are at the point of loosing earnings each month, the total earning balance 'bounces' up and down around the $3,500 level, depending on the amount of earnings expiring and the amount of new earnings added. So if you 'game' the situation..... $4,000!
So, after I use my current $3,500 in GM earnings on my 2008 Enclave, I am going to delay as long as I can the $500 in earnings in the first year. That way I'll have a six month window or so 7 years from now to push my earnings closer to $4,000 when I plan to purchase my new 2015 Enclave.
I believe this to be true. I'm not to my seven year anniversary date yet, so I can't confirm if this is how it will work or not, but it does make sense. If anyone has contradictory or confirming information or experience on this subject, lay it on.