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Old 09-11-2022, 07:37 AM   #1
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GM Heavy Duty Truck Maintenance.

The 2020+ Heavy Duties Ball joints and tie rods have grease zerks. I had no idea when I bought my new 2022. The Duramax Forum drew it to my attention and also pointed out the need to inspect them because they aren't greased at the factory nor at the dealer PDI. Sure enough my grease boots were dry. There are 9 zerks that need lubed. The three on the steering arms lube easier if you replace the zerks with 90˚ ones. They are 1/4x28 threads. Do a google search and there are good pics of the zerk locations on the duramax forum site.
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Old 09-12-2022, 02:23 PM   #2
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LOL I seen "GM Heavy Duty" and thought you were going to talk about a GMC General.

I know the MFGs like to use the term "heavy duty" but a class 3 truck is far from heavy duty in the transportation industry

Anyway that is great they actually have zerks on a modern truck, I wish all the trucks/cars were this way.
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