Don't you love working back there on those sensors? Glad you got it solved!
Not sure what brand sensor you put in, but it's usually best to bite the bullet and use OE for replacements. Buy once, cry once.
Agreed on avoiding the bargain sensors.
I would not hesitate to put NTK Camshaft Sensor in, if you can't get OE GM sensor...
$36.79 before any discounts
NTK sensors are actually OE suppliers to many vehicle manufacturers and are generally extremely reliable.
They make great O2 sensors, cam sensors, crank sensors, ABS speed sensors.
I would not think twice about getting NTK for any of those sensors. I have had great experience with their products. I know they are high quality and reliable (never had issues after install). Price is a little better than GM original and available from places that are open longer hours and Sundays, when you can't wait until Monday morning.
The GM was listed as only $8 more and is probably the best option.
Just sayin'... NTK would be the way to go, in my opinion, if GM is not available for you at the time you need it.