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

[ScottyBoy]

well, seems like I can't win this weekend. replaced Ignition housing and the ignition cylinder. The damn truck never goes into the relearn procedure and the security light blinks nonstop. No 10 minute, 20 minute, or 30 minute window works the light just never stops flashing to even allow me into the first step of the relearn procedure. So, from research online and talking to a few 12volt installers I used to work with, we believe that maybe the BCM is on permanent lock out.

Anyone here ever deal with this? I ordered a BCM should be here Tuesday.

Do you happen to have a Nelson tune?
I know from experience that Nelson locks their tunes. And because of that, you cannot do security relearns, or even add a remote start bypass module to bypass the Passlock 2 security. I had this problem when installing a remote start on a truck with a Nelson tune. I went through three frikkin bypass modules thinking they were bad, but in reality it was the tune that was the culprit. Being "locked" it will not adjust, bypass, or change ANY Security setting. I finally ended up having to go old school and bypass it with resistors at the steering column. That way instead of telling the computer to "bypass" the Security and let the engine start, the resistors just fool the computer by sending the proper resistance that would be sent when the key was in the IGN. Even if you have don't have a Nelson tune but you do have ANY custom tune, I would contact your tuner and ask if they lock the computer.

 

[inmypassatlife]

Do you happen to have a Nelson tune?
I know from experience that Nelson locks their tunes. And because of that, you cannot do security relearns, or even add a remote start bypass module to bypass the Passlock 2 security. I had this problem when installing a remote start on a truck with a Nelson tune. I went through three frikkin bypass modules thinking they were bad, but in reality it was the tune that was the culprit. Being "locked" it will not adjust, bypass, or change ANY Security setting. I finally ended up having to go old school and bypass it with resistors at the steering column. That way instead of telling the computer to "bypass" the Security and let the engine start, the resistors just fool the computer by sending the proper resistance that would be sent when the key was in the IGN. Even if you have don't have a Nelson tune but you do have ANY custom tune, I would contact your tuner and ask if they lock the computer.

No Nelson tune, although I'm about to call Allen up at the shop and ask if he'd tune it after this BCM comes in... Pending the outcome of it actually allowing me to relearn the new key.

NP is actually down the street from my office.

 

[ScottyBoy]

No Nelson tune, although I'm about to call Allen up at the shop and ask if he'd tune it after this BCM comes in... Pending the outcome of it actually allowing me to relearn the new key.

NP is actually down the street from my office.

The truck in question that I was fighting with had a Nelson tune and the owner called Nelson repeatedly and they kept telling him that they don't lock the computer anymore. But EVERYONE on PerformanceTrucks forums all said that Nelson does indeed lock the computer, no matter what story they give you. At least I figured out how to just "fool" the computer with the resistors. If you still have your old IGN switch cylinder and you can measure the resistance of it when the key is turned, you can actually bypass the factory Security with resistors that way. The one drawback is that it will ALWAYS be bypassed and that makes it easier for a thief to steal your truck. But hopefully you already have an alarm system with a starter kill or ignition kill.

 

[brian.roberts.1293]

Lose the ring....whoops sorry hun...lol

I did the same thing so I switched to a qalo silicone ring no problems

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[95escahoe]

Ordered a new AC Delco blower motor and some body plugs to delete the rear wiper since the motor is bad and even if it worked I'd never use it anyways


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[inmypassatlife]

The truck in question that I was fighting with had a Nelson tune and the owner called Nelson repeatedly and they kept telling him that they don't lock the computer anymore. But EVERYONE on PerformanceTrucks forums all said that Nelson does indeed lock the computer, no matter what story they give you. At least I figured out how to just "fool" the computer with the resistors. If you still have your old IGN switch cylinder and you can measure the resistance of it when the key is turned, you can actually bypass the factory Security with resistors that way. The one drawback is that it will ALWAYS be bypassed and that makes it easier for a thief to steal your truck. But hopefully you already have an alarm system with a starter kill or ignition kill.

I am aware NP locks their tune. I am also aware of the resistor bypass, I was a Mobile A/V installer for many years. The problem is I still need to get access for the BCM to learn either the resistor or the new keys, no way around it.

 

[bottomline2000]

^^ If you buy someone's Autocal, you pay BB for the lifetime tune which is $300 I believe, plus the cost of the used Autocal.

Correcto!

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[Tonyrodz]

No Nelson tune, although I'm about to call Allen up at the shop and ask if he'd tune it after this BCM comes in... Pending the outcome of it actually allowing me to relearn the new key.

NP is actually down the street from my office.

Doesn't the dealer have to flash the bcm to your vehicle /vin?

 

[inmypassatlife]

Doesn't the dealer have to flash the bcm to your vehicle /vin?

To get it started? Nope, just need to learn the key resistance and then can be taken to get programmed afterwards, I have heard so much conflicting stuff its crazy. Some of the LSTech guys said if I am buying a new BCM i can get it to start, if I was using one off another truck I would have to get it reflashed, who knows, we will find out.

 

[95escahoe]

Ordered some supplies for the rear wiper delete


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[BigDaddy13440]

Received my smoked headlight and DRL/turn signal housings today! Wasn't expecting them till Friday. Now I can swap them tomorrow, my damn truck looks like it's got a droopy eye, passenger headlight has been lighting up the road bright as blazes for the last week..... but only 12 feet in front of the bumper...

 

[Gzes]

Did an oil change on my stepside yesterday. Royal purple haha. Did a few little things to it to like a bad mirror replacement and my bed cover lock. Gotta send it In to get a few pieces color matched but not yet

 

[dantheman]

about to send off the final payment for my 05. got her washed up for my wife so she could have a nice shiny ride for her birthday tomorrow.

shes sitting at 83k miles.

list of repairs needed currently,
power steering pump started making a bit of noise, rear brake pads/rotors, bleed brakes. Drivers rear window motor seems to have died. Need to refresh the steering soon too.

but otherwise shes been a trooper. only problems in the 3 years have been the front brakes, wheel bearing, radiator, battery and the charcoal canister/cant fill the tank issue. Thats pretty much it. Hope to have this girl many many more miles and years.

here she was when i brought her home on halloween 3 years ago.

 

[dantheman]

i have been trying to find a set of 14 all terrain 20's to put on her as a "paid off" present.

i think over christmas im going to do a headunit, stereo, backup camera etc for the wife. she has made mentions about how much she loves those features in our lexus.

 

[Fosscore]

i have been trying to find a set of 14 all terrain 20's to put on her as a "paid off" present.

i think over christmas im going to do a headunit, stereo, backup camera etc for the wife. she has made mentions about how much she loves those features in our lexus.

Still looking good. Shined up nicely.

 

[JollyRoger01]

My Nelson fan harness shipped yesterday. I seen after the fact that they have over heating issues at the relays... Can anyone confirm if this is still an ongoing problem?

 

[ScottyBoy]

To get it started? Nope, just need to learn the key resistance and then can be taken to get programmed afterwards, I have heard so much conflicting stuff its crazy. Some of the LSTech guys said if I am buying a new BCM i can get it to start, if I was using one off another truck I would have to get it reflashed, who knows, we will find out.

Keep us posted about this. Maybe even start a separate thread. This will be VERY useful information for anyone who has to replace their ignition key cylinder.

 

[95escahoe]

My Nelson fan harness shipped yesterday. I seen after the fact that they have over heating issues at the relays... Can anyone confirm if this is still an ongoing problem?

Your best bet is to get an OEM harness, the aftermarket ones have the issues with the relays, the OEM ones mount behind the under hood fuse box away from the heat for the most part the aftermarket ones mount a lot closer to the engine, if the wiring was longer you wouldn't have that issue, I've heard some that say the aftermarket wiring isn't as good as the OEM setup, here's the OEM harness I'll be using after I get the fans turned on in the PCM

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[ScottyBoy]

My Nelson fan harness shipped yesterday. I seen after the fact that they have over heating issues at the relays... Can anyone confirm if this is still an ongoing problem?

I can't say for sure if they have resolved the overheating and melting issues yet. I can say for certain though that I have not had a single issue with my OEM harness that I got from a 06 Silverado. I've had my E-fans wired up with an OEM harness for over 6 years now and the summers here in Louisiana can be pretty brutal. We regularly have triple digit temperatures, and sometimes for over a month straight. And even in these extreme temps, I have not seen even a hint of any melting on my harness or relays. But as far as the Nelson harness and the LS1FANS harnesses, I have seen quite a few people online who have had problems with the relays and/or the relay plugs melting. I have not seen anyone post about it in about the last year, so I honestly don't know if Nelson has resolved the overheating problems or not.

 

[HiHoeSilver]

@Rocket Man