Question about 2007 Cadillac CTS 3.6L
The lower intake manifold is leaking. People at work indicated that the problem with the GM lower intake manifolds is that the manifold warps causing the gasket to leak, not so much a gasket problem. They recommend replacing the lower intake manifold & gaskets. A local repair garage has a complete kit which includes the intake manifold. I am also told that GM will reimburse some of the expense as this is a common GM problem. Does anyone have suggestions?
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Posted on Jan 02, 2017
If its the same as my GTP, its just under the Supercharger right in the middle of the intake.
Just pull it out, its only held in with a O-ring. When you replace it, make sure you lube the gasket with grease so its easier to put back in, and less likely to nick the O-ring.
Posted on Apr 20, 2009
upper left side of engine, near throttle body
Posted on Jun 30, 2009
Parts stores carry a kit including a manifold and gaskets. When I do the job I always replace the lower intake gaskets because they leak too. Make sure the lower manifold is not warped around the rubber gaskets towards the throttle body side, a new or used loewr manifold might be needed to ensure a correct repair.
Posted on Sep 22, 2009
Proper resealing and problem resolution (warpage, etc.) cannot be done without removing and inspecting...
TPI sensors are problems on many cars, not a huge deal....
Posted on Sep 11, 2010
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