"Weak sales" for the Camaro are different
These are annual sales numbers for the Camaro in recent times, when they were still making them. They did see a big drop before they killed it, but they're also anticipating a big pickup in sales on the relaunch of the new design. We'll see how that pans out, but still:
94: 119,934
95: 122,844
96: 66,827
97: 95,812
98: 77,198
99: 42,098
00: 45,417
01: 29,009
Edit: looking even further back than that, they were consistently in the 100K-250K per year range up until the recent dropoff highlighted above.