Worked on my 2007 Avalanche LTZ 4x4 Excellent (first year with new body). It's easy to program yourself, just look it up on You Tube. Has been working without problems for a few months. I installed it myself but wouldn't recommend most to do it themselves unless you know how to break the bead and install it on the tire. Also, you have to get it in the right direction and be careful not to break them when attaching the beads. If the tire moves while running, you probably need to balance it, so mark the wheel and tire with tape before running. Overall excellent value for money.
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