1999 gmt 400 truck had 7.4 4l80.now 2001 lm7 tach wont read anythging
what settings do i need to setr for hi n low in the tune?
thx
1999 gmt 400 truck had 7.4 4l80.now 2001 lm7 tach wont read anythging
what settings do i need to setr for hi n low in the tune?
thx
Have you tried 3?