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

[Sam Harris]

Today, driving one of the 4 trips back and forth to school for the kiddo, I noticed my charger light come on… uh oh..


About 6 months ago, when I did my efan conversion, I also did the alternator, serpentine belt, a/c Idler, and belt, pretty much everything but the water pump up front.. the battery however is dated 2017.. so rolled to the auto parts store, the battery tested bad, and $300 or so later, I left with a new Optima Red Top, to replace the old one ..

Replaced.. and still not charging.. dammit..


Tested the voltage from the alternator stud while running, and measured 11.58v. (Thanks for the suggestion @Fless!) so my 6 month old refurbished AC Delco was already shot.. contacted Summit, who I ordered from, and it’s on back order (of course).. so for now, I have a cheapie that’s getting the job done. I’ll hang onto it for the next time. Sheesh.


Back in business… and look at those damn miles creeping up..! I rolled 226k this morning..

 

[Fless]

Today, driving one of the 4 trips back and forth to school for the kiddo, I noticed my charger light come on… uh oh..

View attachment 370200
About 6 months ago, when I did my efan conversion, I also did the alternator, serpentine belt, a/c Idler, and belt, pretty much everything but the water pump up front.. the battery however is dated 2017.. so rolled to the auto parts store, the battery tested bad, and $300 or so later, I left with a new Optima Red Top, to replace the old one ..

Replaced.. and still not charging.. dammit..

View attachment 370201
Tested the voltage from the alternator stud while running, and measured 11.58v. (Thanks for the suggestion @Fless!) so my 6 month old refurbished AC Delco was already shot.. contacted Summit, who I ordered from, and it’s on back order (of course).. so for now, I have a cheapie that’s getting the job done. I’ll hang onto it for the next time. Sheesh.

View attachment 370202View attachment 370203
Back in business… and look at those damn miles creeping up..! I rolled 226k this morning..

Friday the 13th for you, a day early! Now to have a clean 13th....

 

[S33k3r]

Today, driving one of the 4 trips back and forth to school for the kiddo, I noticed my charger light come on… uh oh..

View attachment 370200
About 6 months ago, when I did my efan conversion, I also did the alternator, serpentine belt, a/c Idler, and belt, pretty much everything but the water pump up front.. the battery however is dated 2017.. so rolled to the auto parts store, the battery tested bad, and $300 or so later, I left with a new Optima Red Top, to replace the old one ..

Replaced.. and still not charging.. dammit..

View attachment 370201
Tested the voltage from the alternator stud while running, and measured 11.58v. (Thanks for the suggestion @Fless!) so my 6 month old refurbished AC Delco was already shot.. contacted Summit, who I ordered from, and it’s on back order (of course).. so for now, I have a cheapie that’s getting the job done. I’ll hang onto it for the next time. Sheesh.

View attachment 370202View attachment 370203
Back in business… and look at those damn miles creeping up..! I rolled 226k this morning..

For what it's worth, I've had good luck with the AutoZone gold line.

 

[MassHoe04]

Today, driving one of the 4 trips back and forth to school for the kiddo, I noticed my charger light come on… uh oh..

About 6 months ago, when I did my efan conversion, I also did the alternator, serpentine belt, a/c Idler, and belt, pretty much everything but the water pump up front.. the battery however is dated 2017.. so rolled to the auto parts store, the battery tested bad, and $300 or so later, I left with a new Optima Red Top, to replace the old one ..

Replaced.. and still not charging.. dammit..

I would have thought they might pick up on a weak or dead alternator during their testing. Don't those test routines look at both the performance and function of the battery and alternator when those guys do these tests? I thought it was part of the fool-proof step by step process guided by prompts on the tool.

Even though it was about 5 years old, I am wondering how bad that battery really was. On the up side, you won't have to worry about the battery for a while...

I got an Optima Red Top from NAPA just a couple of years ago. I found that there were different versions of "Red Top". I found one at NAPA, that had higher CCA than the "Red Top" carried at other places. Not cheap, so I transferred over to my Tahoe when I bought it in October.

 

[latvius]

Got transmission code for slipping, pretty sure my radiator was leaking into the trans cooler. Found these stuck in the trans filter. Flushed the trans and currently replacing the radiator, also bypassed the radiator trans cooler and just go through the tru cool.

 

[Tonyrodz]

Possibly found another rear, supposedly a GT4. Is there a way to bypass if it has the JL4 option--which my truck doesn't. 4 hundo.

 

[mwilson62000]

This came in today.


But will have to wait until Knock Sensors are done.

Getting stuff cleaned up.

 

[mwilson62000]

Knock Sensors done And all back together.

 

[mikeyss]

I was on I-25 with my 06 Sierra Denali, and it has started this scary vibration type feel at speeds over 70mph. I can only describe it as driving over washboard trails, but at highway speeds. I have Bilstein shocks all around, could it be weak torsion bars?

 

[tom3]

Even though it was about 5 years old, I am wondering how bad that battery really was. On the up side, you won't have to worry about the battery for a while...

Sometimes a bad battery will have real low internal resistance and that will cook the alternator. So maybe the battery took out the alternator? Only good thing is that you still have the conventional charging system.