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  1. N

    I need help with fuel tanks on my 87 dual tank

    Got it! After all that work and troubleshooting....it was a kinked 3/8 line! Done nand both tanks working well.
  2. N

    I need help with fuel tanks on my 87 dual tank

    Okay! So I finally had some decent weather and crawled under the truck and removed the selector valve to possibly replace it again with another new one. I pulled the valve but decided to have my father key it with all the lines disconnected and holding the valve in my hand. The passenger side...
  3. N

    Any good hacks/upgrades you've come up with for our trucks

    Does anyone know the easiest/best way to add a remote start setup on these trucks without cutting any factory wiring? Wanting to add to my 87 without power windows or locks
  4. N

    I need help with fuel tanks on my 87 dual tank

    I crawled under the truck last night and pulled the inop tank hose off at the valve and had my father key that tank and I am getting fuel so the pump is sending it. I also get 12v key on at the valve wiring so something is screwy
  5. N

    Why do I have a transmission kickdown relay?

    Here are some pics
  6. N

    Why do I have a transmission kickdown relay?

    I posted on Facebook and everyone there says it's a TH375. Everything I've read says that GM only used those in the 75-79 range. The data tag and vacuum modulator is on the passenger side and it has a long tailshaft on it but it's obviously a TH400 case. I am so lost.
  7. N

    Why do I have a transmission kickdown relay?

    Okay this is odd. It says MX1 and M40 the M40 is a TH400. I just crawled under the truck and it is a TH400
  8. N

    Why do I have a transmission kickdown relay?

    Here are the only 2 items in the glovebox
  9. N

    I need help with fuel tanks on my 87 dual tank

    Hmm I need to check that this evening. I started with 5 gallons in each and when I changed tanks it seemed the levels were the same (As they should've been) but now that I've been driving the truck on the passenger tank, I haven't checked level in the other one. So you're saying the pump might...
  10. N

    Why do I have a transmission kickdown relay?

    I have the fuel pump relay on the firewall and next to it is a transmission kickdown relay. I have an 87 TBI truck with the 4.3L and a TH350 trans. I think (Not near the truck right now) the truck came with a TH350 new and I think that is what is in there now. It's either that or a TH350C. I...
  11. N

    I need help with fuel tanks on my 87 dual tank

    I've got my 87 dual tank TBI that has the 4.3L V6 and I put all new parts in it and I cannot get the drivers side tank to fire. The pump primes with the key on and it will crank but I'm not getting fuel in the throttle body. I've checked grounds etc. All new stuff. New tanks New pumps/sending...

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