Question about 1995 GMC Sierra C1500

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On a 1995 GMC sierra P/U 5.0L engine. The

On a 1995 GMC sierra P/U 5.0L engine. The exhaust system leaks where there is a bolt connection of the pipe from the right exhaust manifold and the pipe from the catalytic convertor connect. Do the exhaust manifolds need to be replaced to fix leak ?

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  • Anonymous Mar 25, 2014

    replacing a manifold gasket

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  • GMC Master
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NO , just replace the the gasket and exhaust bolt, just make sure you buy a stainless bolt, there not much more but they will out last the truck. and might as well replace the drive's side too since your working on it. Good luck and hope this helps. 

Posted on Jul 01, 2009

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Posted on Jan 02, 2017

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1 Answer

I have a 1995 GMC sierra truck smoke when it stop at red light.


It probably smokes all the time , when moving you don't notice it > What color smoke ? White - coolant is getting in to the combustion camber , head gasket , intake manifold . Blue - oil is being burnt - rings , valve seals , Black - running rich , leaking fuel injectors . leaking fuel pressure regulator . Smokes from were , exhaust ? Engine bay etc....

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I have 1999 gmc new Sierra Z71 1500 4wd 4.8 8cil shows code P0420 what can I do to fixed


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1 Answer

Strange noise!


My 2005 GMC 2500HD (8.1 lt) had the same problem. I just had an exhaust leak fixed today. The right front manifold bolts were broken and the manifold was warped. The repair was 6.5 hours labour plus gaskets, seals, bolts and the manifold machining (parts were $130 CDN).

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1995 GMC Sierra


Just a thought, have you checked yout TPS(throttle position sensor)? I had similar problems with my 89 GMC Jimmy 4.3l, however a code 44 is strange. Also check to see if your problems go away if you advance the timing a few degree's.

Hope this helps

Jun 15, 2008 | 1995 GMC Sierra

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