Re: 1999 5.3 liter Vortec V-8

["hi 50" <ckyk@hotmail.com>]

It does have a DIS ignition system....I take it the <'99's have a 
distributor?  This means the ECM would have to be different?  Thanks, 
Charles Kondo


From: "Bruce Plecan" <nacelp@bright.net>
Reply-To: gmecm@diy-efi.org
To: <gmecm@diy-efi.org>
Subject: Re: 1999 5.3 liter Vortec V-8
Date: Fri, 23 Jun 2000 11:19:11 -0400

Guess, I gotta start opening hoods when at the dealers.
yesterday the new Firebird at 31K was scary.  Gettin close to what I paid
for a house once.  Thanks for the info
grumpy


 > I'm not sure about the module match. The 97 and later LS1 series engine,
 > which is now in the new trucks with a different intake, have no
distributor
 > or high voltage switch. The ignition is CNP coil near plug. Each cylinder
has
 > its own module, coil, coil to plug wire and they're all the same. The PCM
or
 > now VCM controls each cylinder's spark timing individually, similar to 
the
 > injectors. It does use a new PCM for these, the old truck L 31 with the
eight
 > poppet injectors (out of sight) has its own PCM family. The new engines
have
 > external injectors, like most PFI systems.
 > 

 >