Popped the hood the other day to check an A/C compressor function and what do I see? Oil filler tube & cap....gone. I think it's just a push in fit, but really, just fell out? Is this common for a 14 year old Sub 5.3 with 225k? Surprisingly not low on oil.
Seen this before....missing oil filler tube?
- Thread starter mattt
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crazycoupe
Rollin Low
They actually have a locking tab inside. They twist in, but could have become brittle and broke free. On a side note I usually remove mine and just screw the cap right in the valve cover and use a funnel to fill it.
Well, I thought it was gone, never to be seen again, but I found it last night. It had wedged itself down under the A/C compressor lines where they hook up to the compressor. New O-ring and get it installed. It's still strange to me that it came out.
While re-installing this last night, I noticed that one of the black plastic caps was missing from the A/C charging ports as well. Now I'm starting to wonder if someone has been under the hood of this Suburban with ill intent. Two things missing/removed 
One very surprising thing I found....the oil was full on the dipstick. None had blown out of the missing oil cap fill tube when it was open. Good thing on that one.
One very surprising thing I found....the oil was full on the dipstick. None had blown out of the missing oil cap fill tube when it was open. Good thing on that one.
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