Pulleys for GMT 900

[Snagglefoot]

Received a belt tensioner and pulley for 2008 6.0 from Rock Auto. The originals with 210,000 miles had significant play. The new ones have a small amount of play. I had already replaced the power steering pump, AC compressor belt, and AC compressor belt tensioner. They are fairly cheap so I went ahead with a proactive approach. I’ll keep an eye on the water pump and alternator. The two belts are new as well. This part of my goal of reaching 300,000 miles.

 

[GMBoy]

I did the same preventative maintenance but at 100k since that is the generally acceptable life of a belt.

 

[The Critic]

Check the printing on the dust seal of the pulley. If those pulleys are made in china, you should not expect the same service life as the originals.

 

[AutoMechanic]

Great. I only ever replace them when they fail I’ve never had one fail lol. Yesterday I done my first manual tensioner though and I didn’t know it was manual and nearly broke off the pulley I was trying to move lol .

 

[RAR]

I did them on my moms 2008 Silverado 5.3 earlier this year (when it got warm sometime in May). It was later when I had to do the AC tensioner and belt that I mentioned in another thread.

Lately I’ve been just swapping out the tensioner with a good belt when the time comes. My new to me 2015 Ram 1500 with the 5.7 Hemi got a new one with a green Fleetrunner belt, and I did the same service on my 2010 Crown Vic (Bando belt on that one).

 

[Snagglefoot]

Check the printing on the dust seal of the pulley. If those pulleys are made in china, you should not expect the same service life as the originals.

Worse! They’re made in Canuckistan! (CANADA).

 

[Snagglefoot]

I installed them today. The pulley on the belt tensioner was noisy and had some play. The idler pulley also had a bit of play. I was able to do the work with the fan shroud in place. The fan shroud was molded in such a way to allow a ratchet wrench to be used. Also I used a belt tensioner tool to rotate the tensioner. So now the pulleys, PS pump and both belts have been replaced. All good.

 

[RoadDukie]

Hey Snags.... Do you happen to recall what brand you purchased? Are these Delco?

 

[Snagglefoot]

Yes, AC Delco Professional from Rock Auto.

 

[RoadDukie]

Thank you. I was looking at the same for my 07 Avalanche.
I may splurge and go with the Delco OEM however. Visually, the two lines don't look very different though. Not that I'd expect to see a big difference.