In 99 the pickups changed to the newer version, but for the Tahoe and Suburban, 99 was a short production year of the older version, which is why I am posting this in the Classic Trucks section.

I changed the front rotors and pads in the wife's 99 K2500 'burb over the weekend, and when I was done, the ABS light came on in the instrument panel. Via HpTuners, saw it was not happy with the sensors on both ends of the front axle. Tried clearing the codes with no luck - maybe I can't with an HpTuners license for 03 Avalanches and 04 CTS-Vs??? Other than that, the new brake components seem to be working fine.

I double-checked that I had replugged in the wiring connector for the sensors - that looked good. I'm assuming I should have cleaned or done something that I didn't do prior to reinstalling the rotors/hub assembly? (The 3/4 ton rotors are installed "behind" the hub assembly, requiring you to remove it, as well as drive out the lug bolts securing the rotors to the hubs.)

If anyone out there can help me out with this I would greatly appreciate it!

 

Did the new rotors have the ABS reluctors on the back of them.