tedro

I bought a 2003 Yukon XL Denali with the 6.0L a couple of weeks ago. I went to clean the throttle body as it was having a surging issue when cold, and I discovered the tab for the wire connector was bad. I'm now getting the random "Reduced engine power" message and I'm 99% sure it's because of this connector.

I checked RockAuto and it shows nothing for my vehicle, but if I look under a Silverado 5.3L or 6.0L there is a handful of choices.

Do all of these Vortec motors use the same throttle body and connector? Can somebody help me out with a part number to get the right pigtail?

Thanks!

tedro

I did a little more research. It looks like OEM is an AC Delco PT1572. These must not be made anymore because there are only a few out there online and they are pretty pricey. Dorman offers an aftermarket one, part number 645-800 that's on ebay for around $25. Can I get someone to confirm if this sounds correct? I'm also still curious if it's the same for all the 5.3's and 6.0's.

2000suburbanjeff

maybe try a junk yard save yourself a little cash man.