Duramax Lifetime Supporter
Join Date: Apr 2014
Location: Millersburg, OH
No, your oil pump does not need to be changed preventatively. If you stay on top of your fluid change intervals, you’re good. Maybe keep an eye on your water pump to make sure it’s not damp around the weep hole. That’s a sign it needs replaced.
Could change your serpentine belt, tensioner, and idler pulley‘s so it doesn’t leave you stranded sometime.
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2017 GMC 3500 DRW/CCLB
--2015 GMC 3500 SRW/CCLB--