Despite extensive searching and lots of hours reading posts I have yet to find a list of common problem for the 1999 Suburban. Or at least the 96-99 Burbs with the Vortec 350. Basically the only common problem that I have seen mentioned is the intake gasket. Surely there is more than just the intake gasket that seems to fail on these Burbs. I read on consumerguideauto.com that the intakes were a problem thru 1998. Below is the excerpt from their site: Oil leak: Oil loss and fouled spark plugs result from intake manifold gasket leaks. (1996-98) Did they fix the intake problem on the 99 models or is it the same as on the previous years? Also, could anyone list for me other common problems associated with these models (96-99)? Thanks in advance!