Product review (5 stars): CALL CUSTOMER SERVICE FIRST!!!!!  SAVE BIG $$$$
After reading the comments, I too called GE Customer Service at 800-386-1215.  I was on hold for over 20 minutes, but decided to stick it out.  Glad I did.  Had my Model and Serial numbers handy and told the rep that the thin chime-like coating on my stove knobs were all buckled and peeling.  My stove is only 5 years old.  She took info, asked if I could hold another few minutes, and came back with a report from engineering.  They were made aware of the poor materials and have redesigned the knobs.  Still plastic, but a better material.  Six (6) new knobs are being shipped to me....AT NO COST!  Thanks Amazon reviewers for all of the great suggestions!