Thinking about a 2005 GXP... - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Bonneville GXP/ Northstar Powered Cars Discuss your Bonneville GXP and/or any other Northstar powered Olds or Cadillac... Including the 3.5L Twin Cam V6 (Short Star ) 4.0L and 4.6L Northstar V8's. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-16-2014, 01:33 PM   #11
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word of advise, plan on continued head gasket replacement in your future after the first one Second failure at 153 K mi now with even using studs History shows GM N* long, long history of failures blame the manufacture, GM design, GM service shop, independant repair shop, gaskets, head bolts, studs... etc, bottom line they all still fail One can find other cars that do not have this historical background of head gasket failures... not one in even 300K mi. LOL
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Old 06-07-2015, 07:45 PM   #12
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What appears to happen the head gaskets start to leak then in some cases they leak coolant into the combustion chamber and because water wont compress they rip the threads out of the block
O there is a fix called timserts were you drill the block and tap it out bigger
and tread in a insert with threads on out side and inside
best left up to a machine shop on a bare block
And who is to say it wont happen again
Lets just say the aluminum in a beer can is better quality then
the block is made of
Did we say anything about were you have to remove the engine to get the heads off
or the oil pan in the sub block
And lets not forget when your wife calls you saying the starter is dead
and you think {no big deal I will change it at her work right!!}
GM'* idea was {hey how can we screw every one from working on this more then we all ready have}
I know we can put the starter under the intake manifold
the only people that still have one soon finds out there life savings are gone
paying some one to fix it

Last edited by REGAL GUY; 06-07-2015 at 07:46 PM. Reason: spelling
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Old 06-07-2015, 07:49 PM   #13
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don't feel bad the you could have a Chrysler 2.7 that'* actual worse then the N star
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Old 06-08-2015, 12:28 AM   #14
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well in any case now 186K on the clock since the last head stud repair at 152K and still running for now but water pump and power steering hose leaks.
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Old 11-02-2015, 09:56 AM   #15
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I wouldn't let all the negativity here get you down. I've got 131,000 on one and still going strong. There'* so called issues with every car. Doesn't mean yours will suffer the same fate.
Enjoy your ride. It'* an awesome car.
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Old 11-03-2015, 07:57 AM   #16
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hope it holds up
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