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so after some thinking and observing.. it was a bad intake manifold gasket.. ding dong at the shop charged me for a new top end gasket set, and changed nothing at all. instead he tore the IM gasket and tried to put it back on... so i pulled the heads anyhow to completely clean out the cylinders...

i had and have the same problem with both the 99 hoe and 99 burb. in the suburban i replace the sender and pump cause the guage stopped working completely unless it had over a half tank in it.. but i cant get the vibrating to go away.. its annoying cause it makes me feel like its still not...

was it on a pre 86 motor? cause i really didnt think it would work on anything older than like a post 86.. but i dont know.. thanx for lettin me know that i dont think im gonna try it unless i get some for sure its gonna work answer...

any negatives to adding the 5.7 vortec EFI setup to a non vortec motor? also what makes the difference is mainly the head design correct?

hey guys im new here, but not new to my tahoe at all.. i have a 99 tahoe LS 4wd and a 99 Suburban LS 2wd. well took my burb in for a tickin noise they said valves need adjusting and per the receipt they refilled the coolant, well got it back no coolant at all blew a headgakset on the way home...