where are you getting that the OEM TPMS system is unstable? The primary issue I've read about it is that, depending on the GM dealer, you may or may not be able to get the lower limits set as low as you may want.
2004 GMC Sierra 3500 C&C, added 4WD, 6.0L gas, Extended Cab, SLE, Transgo 4L80e-HD2 kit installed
Whee! Dually Club Member #1109