Question about 1998 GMC Suburban

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Oil cooler line replacement on a 1998 Suburban How to get the lines off of the oil pump

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Ok...answer to the question about how to remove the oil cooler lines from the oil filter housing. Once you remove the oil cooler line, either upper or lower (Or both) from the radiator. By the way, I have a 98 GMC suburban 2wd 1500, I was able to just remove the fan housing and unbolt the fan by the four bolts behind the blade, this gave me the room to remove bottom half of fan shroud.
Once lines disconnected from radiator, there is a retainer clip that holds the hose into the nut that is screwed into the oil filter housing. I doused the nuts with WD40, then removed the clip with a screw driver. BE CAREFUL not to let the clips get away from you because it would be a pain to replace. Autozone does not carry nut nor clip!!!!! The hoses are held together by a clip and attached to a bracket as you follow the line toward the front of the truck.
Once clips are removed, tug on each line individually away from the nut screwed into the oil filter housing and wahlaa. Remove the nut and clean all the old teflon tape off with a steel brush and WD40. I reinserted the clip back into the nut and with the new oil line in my hand, pressed the line into the nut with the clip in place. This way you can see how the nut and clip lock the hose in place. Enjoy and I hope this helps you out.
Oh.....use teflon tape on the radiator treads as well as the oil filter housing threads. Install starting at the radiator housing. Snug the bolt (1' 1/16" socket) with the retainer clip inserted.

Posted on Jan 03, 2012

  • Rod Henny Jan 03, 2012

    Correction....Start at the oil filter housing and the teflon goes on the threads on the nuts.


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Remove oil filter assembly press plastic tabs pull line out should replace tabs and o ring on assembly to block

Posted on Nov 26, 2009


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