Update by user Jul 25, 2013
After posting here and submitting a direct email to GE (ConsIndsocialmedia@ge.com)...I received an email response on Sunday (~ 12 hours from post and email) from GE notifying me they were going to replace the knobs. I received the new knobs (~ $250 in value) via mail on Wednesday (3 days from posting).
I'll have to admit, even though I was not happy about the knobs...the customer service response was amazing and the "newly" design knobs are a significant step up in quality.
Original review posted by user Jul 21, 2013
We bought our GE Cafe gas range/oven in 2008 and were pleased for the most part except for knobs.Beware they break...complete design flaw.
The plastic tip where the knob connects to the stove cracks and basically the entire knob needs to be replaced. I'm kinda surprised GE didn't issue a recall for the knobs - since a broken one may cause the burner to be stuck in the on position. It's kinda surprising that they would use such low quality knobs after making stoves and ovens for so many years.
Net result, we tried to make some repairs, however now we will need to purchase $250 in new knobs...and it appears now the new knobs are different (I'm guessing improving on the design flaw) than the originals.
Review about: Ge Appliances Range.
Monetary Loss: $250.