Review on ACDelco Professional Serpentine Drive Belt Tensioner Kit - ACK040378HD by Anthony Daniels

I bought this to fix my dad's 2502 Silverado 2500 6.0. When troubleshooting with no cold AC, I found a broken compressor belt and an idler pulley that wouldn't spin. This kit included a tensioner that perfectly matched the original and a high quality belt. Both were boxed and marked with genuine GM tags. The installation went better than expected. The five shields and two pulley bolts as well as the main belt tensioner are 15mm in diameter. A ratchet or 3/8 breaker will fit the new pulley, and a flathead screwdriver for the intake line completes the tool list. It doesn't get much easier than that. I didn't even lift the truck to gain access. I used some blue Loctite on the pulley bolts just to be sure. All in all, it took about 30 minutes and less than $60 to fix the air conditioning problem my dad had been living with for over a year. I highly recommend replacing the idler pulley if you have any doubts about its condition. Mine was 17 years old. and the bearing was so worn that the pulley jammed and the belt broke. It only makes sense to do this while under the truck. And since the belt was already snapped in my case, it wasn't difficult to remove and inspect it before deciding to replace it. All in all, I highly recommend this set. In fact, I have a 2500 2500HD and a 2500 Suburban 2500 that will most likely get the same treatment before leaving me without air conditioning in the Georgia summer heat.