What did you do to your NBS GMT800 Tahoe/Yukon Today?

[Gmg0547]

Refreshed the headlights and turns signals. They weren't terrible to begin with but they looks so much better now. It really makes a difference in how old the truck looks when they are cleaned up.

 

[Tonyrodz]

Ok, I finally installed my electric fans. Followed instructions to the letter. The fans aren't kicking on. It actually overheated while running. Stuck the correct wiring/color into the corrects pins, into the pcm. Everything else was pretty much self explanatory. Should any of the plugs going to the fan be hot at anytime? I even tested the plug that the 2 fan leads terminate to. I bolted the constant 12v to a hot pole in the fuse box, and I have a good ground--I tested it to make sure. What am I missing here? @ScottyBoy ? Anyone??

 

[Tonyrodz]

What's a good way to test the fans now that they're installed?

 

[mattbta]

What's a good way to test the fans now that they're installed?

Ground either blue or green wire or disconnect the connector where the wires to the pcm are junctioned and use a test lead to ground either side headed to the harness/relays. One is low speed, the other high.

 

[Tonyrodz]

Ground either blue or green wire or disconnect the connector where the wires to the pcm are junctioned and use a test lead to ground either side headed to the harness/relays. One is low speed, the other high.

I'll give it a shot. Thanks @mattbta.

 

[ivin74]

The correct tensioner finally came today. Got motivated enough to put my pants on and swapped it out on the Hoe. Took it for a ride and it's gtg! So that's what the issue was, damn tensioner.
New View attachment 414134
OldView attachment 414135
There definitely was A LOT of excessive play in it. New one is tight as a drum.

What brand did you have before? Just curious so other members don't buy it.

 

[ivin74]

Ok, I finally installed my electric fans. Followed instructions to the letter. The fans aren't kicking on. It actually overheated while running. Stuck the correct wiring/color into the corrects pins, into the pcm. Everything else was pretty much self explanatory. Should any of the plugs going to the fan be hot at anytime? I even tested the plug that the 2 fan leads terminate to. I bolted the constant 12v to a hot pole in the fuse box, and I have a good ground--I tested it to make sure. What am I missing here? @ScottyBoy ? Anyone?? View attachment 414533View attachment 414534View attachment 414535

Did you get the pcm program for the fans to kick on?

 

[Tonyrodz]

Did you get the pcm program for the fans to kick on?

The pcm was supposedly tuned for it. I'm gonna call them Monday and see what they say, even if I have to bring the pcm down to them so they can bench tune it.

 

[Tonyrodz]

FIXED!!
It was instructional error. I had the constant 12v bolted on a constant hot pole under the plastic fuse panel. I moved it to the constant 12v "red box" next to the alternator. Fans work as they should.
Thanks to everyone who chimed in.

 

[iamdub]

FIXED!!
It was instructional error. I had the constant 12v bolted on a constant hot pole under the plastic fuse panel. I moved it to the constant 12v "red box" next to the alternator. Fans work as they should.
Thanks to everyone who chimed in.

Constant hot is constant hot. It should've worked. Unless, that constant hot wasn't actually a constant hot, like if it was for a trailer brake or the power for an RV plug. Which, I think it'd need the fuse installed to actually make it hot. I think my fuse & relay center has two terminals next to each other- one is always hot, like the main power coming in and the one next to it is the auxiliary.