What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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Charlie207

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It’s buried in my cam swap thread somewhere, but I totally forgot about it until I saw your post just now.
Did you have to swap the two outer wires on the 3-wire connector, or was it good to go from the start?

I've been reading that there is a difference in signal pin location from the 5 to 3 wire harnesses.
 

Geotrash

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Did you have to swap the two outer wires on the 3-wire connector, or was it good to go from the start?

I've been reading that there is a difference in signal pin location from the 5 to 3 wire harnesses.
I did not. The harness I needed came with the VVT delete kit I bought, and no mods were needed in my case. But mine is also a different engine - 2012 6.2L so I don't know if that makes a difference.
 

Just Fishing

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I replaced my foam with "OEM" but it was white foam vs the OEM yellowish foam.
Not sure if it just turns Yellow with age, but it does seem to be different.
It has softened up with use, but it's still harder than the original on the passenger side.
 

Doubeleive

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I replaced my foam with "OEM" but it was white foam vs the OEM yellowish foam.
Not sure if it just turns Yellow with age, but it does seem to be different.
It has softened up with use, but it's still harder than the original on the passenger side.
my oem seat pad I bought is black foam
 

Charlie207

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camshaft position sensor, that's the one right by the harmonic balancer check to be sure it is plugged in
It is.

I started with the vehicle loom (5-pin) harness > ICT 5pin to 3pin adapter > plugged into the sensor. No start - threw the code.

I then wired the loom > OEM crank sensor harness into the cam sensor. No start.

I'm swapping the sensor now.
 

Geotrash

Dave
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Do I need to have the engine at TDC to start it?
No. Do you have a scan tool that can tell you if the sensor is present or not? That might help determine if it's still a wiring problem.

Some notes from the company that made my kit: The included cam sensor has a 3-pin connector whereas the factory VVT equipped plug has a 5-pin (the two additional wires go to the VVT Solenoid). To use the new sensor, you will need to remove the wires from the 3-pin and reuse the original 5-pin connector or you can simply swap the cam sensor from the existing VVT cover to the new cover.

IIRC, I chose to remove the VVT wires from the 3-pin and reuse the original 5-pin connector (I have the wiring diagram for mine), rather than reuse the old cam sensor. It was a pita to get the harnesses connected because it was a stretch and the harmonic balancer interferes if you don't get it right.
 
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Charlie207

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No. Do you have a scan tool that can tell you if the sensor is present or not? That might help determine if it's still a wiring problem.

Some notes from the company that made my kit: The included cam sensor has a 3-pin connector whereas the factory VVT equipped plug has a 5-pin (the two additional wires go to the VVT Solenoid). To use the new sensor, you will need to remove the wires from the 3-pin and reuse the original 5-pin connector or you can simply swap the cam sensor from the existing VVT cover to the new cover.

IIRC, I chose to remove the VVT wires from the 3-pin and reuse the original 5-pin connector (I have the wiring diagram for mine), rather than reuse the old cam sensor. It was a pita to get the harnesses connected because it was a stretch and the harmonic balancer interferes if you don't get it right.

Ok, so I had forgotten to connect a ground, and thats what was preventing fire-up.

It ran for a couple minutes, but when I tapped the throttle gently the engine died, and won't fire back up.
 

Charlie207

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any luck? fuel+spark+air
I keep getting this error code (via TorquPro)

xOxHw0g.jpg


The cam sensor is new.

The adapter is new.

I put the old cam sensor harness back in, and it started and ran for a few minutes until I turned it off. Then it won't restart.

Clear P0010 code, but it comes back.
 

Doubeleive

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I keep getting this error code (via TorquPro)

View attachment 434731

The cam sensor is new.

The adapter is new.

I put the old cam sensor harness back in, and it started and ran for a few minutes until I turned it off. Then it won't restart.

Clear P0010 code, but it comes back.
maybe put the other one back in again and/or disconnect the battery for a minute and see if anything different happens
 

j91z28d1

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I haven't looked up the code but going by the wording, cam position actuator. you no long have that without vvt right? it should be turned off in the tune and no throwing the code no matter the wiring?

or am I thinking about this wrong?
 

Charlie207

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I haven't looked up the code but going by the wording, cam position actuator. you no long have that without vvt right? it should be turned off in the tune and no throwing the code no matter the wiring?

or am I thinking about this wrong?
You should be right. The tune "should" have turned off the VVT. I'm trying to call BBP now.
 

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