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06 gp gxp

El Day

El Day

New member
Peace and love everybody, glad to find this car community.

I acquired the GXP at the end of last Nov. I knew they were notorious for trans issues and 2months later the tranny blew (warranty covered it, they replaced the power steering pump as well). Got my car back & drove from Detroit-Chicago the same day...on the way back I learned the oil pan heats up excessively on long trips and burnt almost all of my oil up.

3weeks ago a power steering leak popped up. I drove it( putting fluid in of course) and just as I traced it down to a power steering cooler tube - I notice my cars over heating (almost in the red) only to find my radiator hose is leaking.

I get the time to fix it and see this
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Is it possible that (1) the power steering was incorrectly installed (the coolant line is off the the clips and looks shifted). (2) Is it possible the the excessive heat build up from the failed line caused the radiator hose to fail as well? Lastly is there a diagram of where the clips/inserts should be placed? Thanks in advance.

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Yeah it's possible the new line was installed wrong and started leaking or the line itself was just a bad new part and started to leak fairly quickly.

The coolant hose is hard to say, not likely that the heat of the PS line did anything as that fluid shouldnt get that hot to melt the rubber. A rub through or just an aged hose could be the reason for the leak.


As for the missing oil on long trips, these cars are very well known for buring oil. The motor shuts down to 4 cylinders on and off all the time at freeway speeds depending on engine load and rpm etc etc. The cylinders that aren't firing let oil past and it burns up when those cylinders become active again. Some say different brands of oil may help burn less oil but overall it is a common issue with the early 5.3's in those cars. GM says a quart per 1,000 miles is okay but that is still alot.

A solution to that problem is to disable the AFM/DoD feature so it cannot switch into 4 cylinder mode. That would be something only a tuning software could do.
 
Thanks, it's probably just an aged P/S line that met our notorious Detroit craters ...I mean pot holes. The shop replaced the p/s pump so the line was probably just about to go

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