97 lt1 to 98 Ls1 Swap
97 lt1 to 98 Ls1 Swap I have been tackling the wiringing i did what i thought was all the necessary mods to the harness but the pcm is getting power the gauge cluster lights up but I am not getting a read out on the digital dash and cant get any communications on the odb2 port it has power as well.
I didnt touch the lt1 side of the car just the 98 harness.
Here are the mods I changed
C100
A Same
B Same
C Same
D GRY 596 Reference voltage feed - 5 volt reference Didnt Touch
E Moved c101 pin c here (Where does the tps signal from here go?)
F Not Used (lt1 power from actuators fuse 2)
G Same
H Same
J Same
K Sensor Return (unaware of where to move)
C105
A Same
B Same
C Same
D Same
E Same
F Same
G LS1 Tach Signal (lt1 tcs active) Didnt touch
H Not Used on the lt1 plug
C101
A YEL/BLK 625 Vehicle anti-theft system starter enable relay output-coil
B PNK 839 Fuse output-ignition 1-type III fuse (V8 VIN G)
C BRN 436 Air pump relay control - Moved this
D GRN/WHT 465 Fuel pump relay control -Moved under the dash to the c210
E PNK 439 Fuse output-ignition 1-type III fuse Havent Moved
F -- -- Not Used
G ORN 340 Fuse output-battery-type III fuse Havent Moved
H BLK/WHT 451 Ground Was Not Sure if this needed ground by itself
J Not Used I -- -- Not Used
K GRY/BLK 1687 Ignition retard signal (V8 VIN G) Havent Moved
C210
Havent Moved anything on the ls harness
C220
A same
B same
C same
E Not Used on ls1 lt1 power from pcm fuse (havent moved)
F No Info
G Same
H same
J Vats starter enable Unsure on where to place
K same
C230
A Same
B Same
C Not Used on ls (lt its Diagnostic request signal ) Didnt Move
D Same
E Same
F Same
G Same ???
H Same
J same
K Same
If someone has the time to compare the harness and let me know the obvious i missed tonight I would greatly appreciate it. When I left I was just overwhelmed. I figured any help is better than nothing.
Thanks again
I didnt touch the lt1 side of the car just the 98 harness.
Here are the mods I changed
C100
A Same
B Same
C Same
D GRY 596 Reference voltage feed - 5 volt reference Didnt Touch
E Moved c101 pin c here (Where does the tps signal from here go?)
F Not Used (lt1 power from actuators fuse 2)
G Same
H Same
J Same
K Sensor Return (unaware of where to move)
C105
A Same
B Same
C Same
D Same
E Same
F Same
G LS1 Tach Signal (lt1 tcs active) Didnt touch
H Not Used on the lt1 plug
C101
A YEL/BLK 625 Vehicle anti-theft system starter enable relay output-coil
B PNK 839 Fuse output-ignition 1-type III fuse (V8 VIN G)
C BRN 436 Air pump relay control - Moved this
D GRN/WHT 465 Fuel pump relay control -Moved under the dash to the c210
E PNK 439 Fuse output-ignition 1-type III fuse Havent Moved
F -- -- Not Used
G ORN 340 Fuse output-battery-type III fuse Havent Moved
H BLK/WHT 451 Ground Was Not Sure if this needed ground by itself
J Not Used I -- -- Not Used
K GRY/BLK 1687 Ignition retard signal (V8 VIN G) Havent Moved
C210
Havent Moved anything on the ls harness
C220
A same
B same
C same
E Not Used on ls1 lt1 power from pcm fuse (havent moved)
F No Info
G Same
H same
J Vats starter enable Unsure on where to place
K same
C230
A Same
B Same
C Not Used on ls (lt its Diagnostic request signal ) Didnt Move
D Same
E Same
F Same
G Same ???
H Same
J same
K Same
If someone has the time to compare the harness and let me know the obvious i missed tonight I would greatly appreciate it. When I left I was just overwhelmed. I figured any help is better than nothing.
Thanks again
Well got alittle progress today. I got communication to and from the pcm and verified it being a 98. It didnt look like i was getting sensor feed back via hp tuners scan tool yet. Ill keep picking at it. The cluster has me flustered as far the the digital trip and odometer. Hopeing its vats related!
Wish I could help! I found your post while searching for help for myself! I am putting a 2000 LS1 into a 95 z-28. Got what I thought was a 99 harness turns out it is a 98. Was planning on using info from flame's swap on the harness but at that point realized that I had the 98 harness. This is the first swap/major automotive undertaking I have ever attempted so I'm usually lost.
What year pcm are you using?
What year pcm are you using?
