Can some tell me when GM started factory installing the redesigned lower
intake manifold on the 3800 engine?, the one with the smaller diameter
EGR tube to prevent the upper intake from failing.
I think I saw a post in the summer, stating that it was possible that
the 2000 models came with the new intake. I have 2001 Buick Lesabre and
would like to know if mine has the updated version.
I'm certain that you probably will have the updated lower manifold.
There is a bulletin for coolant leakage from upper intakes on 2000-2003
models, but they are very specific in saying that the upper does not
have to be replaced....so I assume that by 2000, the lower intake
manifolds had been changed.
Thanks for the info. I am quite sure that mine is the updated version, but one
never knows 100%. I did get a recall letter form GM stating that the throttle
body nuts need to be replaced and sealant added to the coolant. I had it done,
but I feel that the replacing the nuts is a just bogus way for GM to get you
into their shop so they can add the sealant, in order to get them over the
warranty period. My Buick has extended warranty till Nov 2005, hope fully
if she blows it will be before expiry date.
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