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2006 GMC Sierra 2500HD - Consumer Discussions

All GMC Sierra 2500HD Models

My owners manual says to change the engine oil when the DIC tells me to. It also says I should change the oil at least once a year. Is that really enough? On my other vehicles I change oil and filter ...
New 2006 GMC Sierra 2500HD SLEw/Duramax diesel bought for $200.00 over invoice. :)...
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