ACDelco GM Original Equipment 12669488 Vacuum Pump

BLUF: OEM Part, No issues with install or product in last 3 monthsI had all the tell-tale signs of a failing vacuum pump for my 2016 GMC Sierra (90k miles) so I decided to replace it BEFORE it grenaded and caused a whole host of other problems. After ordering I became more weary of this possibly being a knock-off or aftermarket, but I was pleasantly surprised when I received it and it was 100% OEM. NOTE: This is the end of the product review. From here on it is install info and tips. I can’t really say anymore about the product except it’s OEM and it works like a charm.Install was approx 2 hours and 3 beers and went pretty smooth all said and done. There are a couple of YT videos out there that were helpful, but there was a step-by-step on a forum I grabbed that was the most beneficial (I will edit with a link if/when I find one.) I would recommend removing the intermediate and lower steering shaft, this will make your live so much easier. I would have been done an hour earlier if I hadn’t been stubborn and not wanted to mess with the steering shaft, but it’s super easy and straightforward to do so (just make sure you use a paint pen to make indication marks so you get everything back together correctly.).Since you will be removing the stretch belt on the pump, make sure to get a new one to replace it with (along with a removal tool) and get a new vacuum line as well and check whether yours is stainless or not. As an aside regarding the belts, I’d recommend replacing the serp and the A/C belts too since it makes your life easier to get to the vacuum pump and you might as well replace the other belts while you’re at it.

Easy to install and fixed braking issues with my Yukon.

Works perfectly and has the exact fitment , everything was as advertised in OEM.

Good price for this product

I had ordered one from another manufacturer, and had to replace it 2 times, the third time I went with the ACDelco. Comes with everything you need, Gasket and bolts. Since this was my 3rd time doing it in less than 4 months the installation took me less than an hour.

I just installed my new pump, tensioner and all belts at 100k miles. The pump works great, a huge difference on my truck’s breaking performance. It works better than when my truck was new and supposedly the dealer adjusted it on a recall notice. I highly recommend a pump change out on your vehicle and stick to AC Delco or genuine GM parts.

Listed as an ACDelco original GM product but it's not.Delivery kept postponing for two weeks and finally arrived and it's a knock off part not GM ACDelco.

Pump was as described and works great.The supplier though needs to find a new delivery service because it took 3 different scheduled times and still was late. We made arrangements installing but that became delayed and stressful