Recent content by 400North

  1. 4

    1994 GMC Yukon 4x4 no park/neutral switch?

    I think it is the neutral safety switch at the bottom backside of the steering column inside the cab, I can hear the plastic teeth grinding and if I change from park to drive 20-30 times it will let me start it.
  2. 4

    1994 GMC Yukon 4x4 no park/neutral switch?

    Okay thank you. I have narrowed my issue down. When I change my column shifter from park to anything else, the shifter linkage on the side of the transmission tunnel doesn’t move at all.
  3. 4

    1994 GMC Yukon 4x4 no park/neutral switch?

    Hello, I am trying to diagnose an issue with my suv not starting. I think it may be the park/neutral safety switch since it stalled a couple times while changing from park to reverse to neutral and back and now won’t even try to turn over. I looked on the drivers side of my transmission and...
  4. 4

    Gmt800/900 fan in Gmt400?

    https://www.google.ca/amp/s/www.instructables.com/Blower-Motor-Resistor-Thermal-Fuse-Replacement/%3famp_page=true Also here’s an article that will help you replace the thermal cutoffs/fuses in a blower motor resistor if you want to. I did it with my broken resistor and it worked (I used 15 amp...
  5. 4

    Gmt800/900 fan in Gmt400?

    So I combined the center part of a gmt800 blower motor shrowd with a gmt400 shrowd and put it back together in my truck to test it on high, it blew a bit more air through the vents but not as much as I was hoping for or not enough for me to find this modification worth it. So I’m putting this...
  6. 4

    Gmt800/900 fan in Gmt400?

    Lol, ya I do. I disconnected the battery right away and I unplugged the resistor.
  7. 4

    Gmt800/900 fan in Gmt400?

    So I replaced the resistor which got the gmt800 fan working on all fan speeds now, but the resistor started smoking right away (it smokes on all speed settings not just high). So I will have to find a wiring diagram for gmt400 and gmt800 and figure out how to wire the gmt800 resistor in.
  8. 4

    Gmt800/900 fan in Gmt400?

    Ya I was thinking of getting a gmt800 hvac box from a junkyard and plastic welding just the section where the blower motor sits to the gmt400 box. I will see what I can find/make this week.
  9. 4

    Gmt800/900 fan in Gmt400?

    Okay thanks, ya I will have to replace the blower motor resistor first. Then I can use that to check the voltage difference between the gmt400 and gmt800 blower, thanks!
  10. 4

    Gmt800/900 fan in Gmt400?

    Hey, so I wanted to upgrade my fan blower motor since it starting squealing, only works on high (I gotta change the resistor still), and the air it pushes out of the vents on high is terribly low (and yes I’ve done just about every other thing mentioned in other threads to “fix” poor airflow)...
  11. 4

    Reverse lights only turn on in park

    Hey I had a similar problem with a 1994 GMC Yukon. The reverse lights would go on for half a second when changing from park to reverse, but would stay on the whole time while changing from neutral or drive to reverse. I was able to fix the issue by adjusting the neutral safety switch. It is a...
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