Review on 🔧 ACDelco GM Original Equipment 89017309 Drive Belt Tensioner: Efficient Performance and Reliability by Ted Boone

Ideal for 2000 Astro to eliminate belt squeak. The only significant difference between the old one was that it had a 15mm bolt head while the old one had 13mm. Too bad you have to lift this car up to actually use the tensioner from underneath and then come up from the top to access the bolt mount. If you are making this vehicle, bring small hands and a short head or ratchet wrench to remove/install the tensioner. Big hands can remove the strap easily enough. My average hands struggled without gloves for this job.