Dr1rrrr
Newbie
I have a 1998 c1500 with a 4bt and a turbo 400, I haven't had any auto cars in my life until this one (and I've had 5) so I'm learning as I work on it. It is very clear that the person that did the swap didn't know much about autos as well, so I have a single prong connector on the drivers side of the transmission which from what I've read is for kick down and should receive 12v at WOT which is simple enough what I was wondering is didn't some of the older 2500s of these trucks come with a turbo 400s and if so did they use a switch on the pedal or on the linkage at the engine to send the 12v to the solenoid the reason for asking is I'm trying to keep as many parts factory gm as possible its been my experience this makes later trouble shooting much easier. Also my transmission has a vacuum modulator delete as shown below what I'm wondering is how can I use a stock modulator since my engine is boosted and being a diesel it is almost always in boost unless at idle. I've read where some have used a check valve to bleed off boost but this was in gas boosted engines where boost only really hits after like 2000 rpm. what I'm worried about is that if I use the check valve it might just be the same as having no modulator at all cause I always have boost going to it. Also ignore the 2.865 million oil leaks they are being addressed as well.
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