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

[iamdub]

7/8 hole will be a 1/2" knockout fill.

Easy with the tech terms- it's @Galante we're talkin to here.

 

[07Burb]

Currently scoping out some AC DELCO plugs and wires for the Burb on Rock Auto. It’s about that time again

 

[Doubeleive]

You could always try swapping to a smaller pulley. That way it will spin the alternator faster while its idling, well it will spin it faster all the time but you understand what I'm getting at.

When I had my 1st gen Esky I got rid of the mechanical/engine driven fan and upgraded to the GMT900 dual electric fans.

When my 160A alternator finally crapped out I had a friend of mine that owned a rebuild shop rewind it to a 200A.

He told me he could rewind it up to a 260A but that it basically would not charge at idle.

When I got it back from him it still didn't charge as much as I wanted at idle so I swapped to a smaller pulley from an old alternator I had laying around, it may have been from an old S10 I don't really remember.

Anyway, that did the trick and it charged well at all speeds. The only down side was I had to run a slightly shorter belt to keep the tensioner happy.

I had the tech2 hooked up yesterday and under body/bcm there is a electrical section, in there is option to command the regulator from 40-90%, no matter what I commanded it didn't make any difference and with the fans on high speed it was discharging the battery at around -7/8/9 amps, just doesn't seem right, had the same results swapping battery's & alternators

 

[Kee Fuller]

Currently scoping out some AC DELCO plugs and wires for the Burb on Rock Auto. It’s about that time again

Whats the skill level on this? My truck has 90k on it and not sure when the last time the plugs and wires were changed. Rather do it myself than pay somebody.

 

[PG01]

7/8 hole will be a 1/2" knockout fill.

Easy with the tech terms- it's @Galante we're talkin to here.

You two can lick my left nut

 

[07Burb]

Whats the skill level on this? My truck has 90k on it and not sure when the last time the plugs and wires were changed. Rather do it myself than pay somebody.

Easy. Just take a socket, wrench and about an hour of your time.

 

[PG01]

Whats the skill level on this? My truck has 90k on it and not sure when the last time the plugs and wires were changed. Rather do it myself than pay somebody.

Easy peasy

 

[HiHoeSilver]

You two can lick my left nut

Wth? I was just sayin... jeez. I have a billion black ones if you want me to mail some to you.

 

[lowh07]

Hopefully someone can help me out with something that just came up... whenever I floor it, everything will cut out very briefly at around 5k. Gauges all drop to 0 for a split second and it lights up like a Christmas tree and says stabilitrack off. Anyone have a clue?

 

[Doubeleive]

Hopefully someone can help me out with something that just came up... whenever I floor it, everything will cut out very briefly at around 5k. Gauges all drop to 0 for a split second and it lights up like a Christmas tree and says stabilitrack off. Anyone have a clue?

if you have a tech2 it may have a bcm code stored, I would think anyway

 

[Doubeleive]

I had the tech2 hooked up yesterday and under body/bcm there is a electrical section, in there is option to command the regulator from 40-90%, no matter what I commanded it didn't make any difference and with the fans on high speed it was discharging the battery at around -7/8/9 amps, just doesn't seem right, had the same results swapping battery's & alternators

so I did a little web crawling and have found there is a software update for the charging system for my VIN most of the bcm software is current except the charging system and personalization, so I will probably take it to the dealer on Monday or maybe today and have them flash the bcm, I could probably do it from home but I don't feel like bricking my bcm at least if they do it it's on them.

 

[Rocket Man]

Wth? I was just sayin... jeez. I have a billion black ones if you want me to mail some to you.

A bazillion black left nuts?

 

[iamdub]

Hopefully someone can help me out with something that just came up... whenever I floor it, everything will cut out very briefly at around 5k. Gauges all drop to 0 for a split second and it lights up like a Christmas tree and says stabilitrack off. Anyone have a clue?

VTEC kicking in.

 

[iamdub]

Hopefully someone can help me out with something that just came up... whenever I floor it, everything will cut out very briefly at around 5k. Gauges all drop to 0 for a split second and it lights up like a Christmas tree and says stabilitrack off. Anyone have a clue?

My first stab at this is a voltage regulator issue. Shift to a lower gear that gets the RPM up but lower than the problem area. Accelerate and see if it happens at a specific RPM. Watch your voltage gauge or, better yet, measure it at a power port ("cigarette lighter" socket).

 

[HiHoeSilver]

A bazillion black left nuts?

Only a billion.

 

[Rocket Man]

Only a billion.

Oh...well that makes sense then.

 

[PG01]

Hopefully someone can help me out with something that just came up... whenever I floor it, everything will cut out very briefly at around 5k. Gauges all drop to 0 for a split second and it lights up like a Christmas tree and says stabilitrack off. Anyone have a clue?

Stop flooring it ..........just sayin

 

[kbuskill]

I had the tech2 hooked up yesterday and under body/bcm there is a electrical section, in there is option to command the regulator from 40-90%, no matter what I commanded it didn't make any difference and with the fans on high speed it was discharging the battery at around -7/8/9 amps, just doesn't seem right, had the same results swapping battery's & alternators

I know this may be a dumb question but how are all you battery cables and grounds???

 

[Rocket Man]

Stop flooring it ..........just sayin

Can’t be done.

 

[Doubeleive]

I know this may be a dumb question but how are all you battery cables and grounds???

New ground cable with sensor in the last 6 month, both battery's are less than 2yrs old (odyssey extreme agm's 34/78), big 3 upgrade, plus a new nbs style positive cable direct from alternator to 2nd battery, I do loose about .2 amps from alternator to battery I get like 13.78 testing alternator direct to ground bracket, then I get 13.58 at either battery

when I was testing it yesterday I (think) it was showing fuel economy mode-active when the voltage was down to 11.3v, which it should not have been active as far as I can gather which is making me lean towards a firmware issue. There is a bit of technicality to how the rvc system works like how much battery charge it shows, what the battery temp is estimated at etc, etc.