Battery not charging indicator. What could be my issue?

In the sump. Connected to the oil feed tube.

Try stepping on the brake when trying to shift with the key on. Then try starting im neutral or other gears to see if the neutral safety switch is bad in park. You may have a bad wire from the battery to power distrubution or bad ground. So many things it could be.

Shane, Base 235 75R16, SLE, SLT, XL SLE, XL SLT P245 65R17,
Denali, XL Denali P245 60R18. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
GMC Envoy Tire Sizes
2006 GMC Envoy Tire Sizes
Tires for my Envoy Denali Recomendations

How many mile are on you vehicle ? Have you ever had Alternator replaced before ? You alternator maybe starting to fail , brushes or the voltage regulator .
Charging System Indicators
BATTERY The IPC illuminates the battery indicator when the following occurs:
?€¢
The PCM detects that the generator output is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the PCM requesting illumination.

?€¢
The IPC determines that the system voltage is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the body control module (BCM) indicating the system voltage.

?€¢
The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.

?€¢
The ignition is on, with the engine off.
BATTERY NOT CHARGING The IPC illuminates the battery not charging indicator in the driver information center when the following occurs:
?€¢
The PCM detects that the generator output is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the PCM requesting illumination.

?€¢
The IPC determines that the system voltage is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the body control module (BCM) indicating the system voltage

It would be a good idea to have it checked out , most auto parts stores will do this for free !

You checked the charging voltage at the battery with a ? volt meter ? What was the voltage with the vehicle running ? 13.1 to 14.1 volts ?
BATTERY NOT CHARGING The IPC illuminates the battery not charging indicator in the driver information center when the following occurs:
?€¢
The PCM detects that the generator output is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the PCM requesting illumination.

?€¢
The IPC determines that the system voltage is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the body control module (BCM) indicating the system voltage

Charge Indicator Always On
Step
Action
Yes
No

1

Did you perform the Diagnostic System Check for Starting and Charging? yes or no
Go to Step 2 yes
Go to Diagnostic System Check - Engine Electrical no

2

1. Turn ON the ignition, with the engine OFF.
2. Observe the Charge indicator on the instrument cluster (IPC)

Does the charge indicator illuminate?
Go to Step 3
Go to Symptoms - Engine Electrical

3

1. Turn OFF the ignition.
2. Disconnect the generator connector.
3. Turn ON the ignition, with the engine OFF.

Does the charge indicator illuminate?
Go to Step 4
Go to Charging System Test

4

Test the charge indicator control circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 6
Go to Step 5

5

Replace the PCM. Refer to Powertrain Control Module Replacement in Engine Controls 4.2L.
Did you compete the replacement?
Go to Step 6
--

6

Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 3

The charging system on your vehicle is Computer controlled . called ( smart charging system )
BATTERY NOT CHARGING
The IPC illuminates the battery not charging indicator in the driver information center when the following occurs:
• The PCM detects that the generator output is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the PCM requesting illumination.
• The IPC determines that the system voltage is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the body control module (BCM) indicating the system voltage.

Do you know what DTC'S - diagnostic trouble codes are ?
DTC B1327
DTC B1328
DTC P0562
DTC P0563
DTC P0621
DTC P0622
DTC P1633
DTC P1634
DTC P1637
DTC P1638
These codes are all associated to charging system problems .

Battery light lit on the instrument cluster ?


Are You Smarter Than Smart Charging System MOTOR

With the engine running check the voltage at the battery. You should see more than 13.8 volts and better yet more than 14 volts. If you have 12 volts or less than its pretty likely the alternator is no longer charging.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Check that battery terminals are clean and secure,Check battery state of charge.Check Alternator belt,Check Alternator output Voltage and amperage

You need to have your charging system load tested, this can be done at places like AutoZone.

About 45% of all transmission problems are due to a defective battery, its components and the charging system. Make sure you have the correct battery in the vehicle and inspect all items relating to the charging system and the battery. The vehicle should charge between 13,5 to 14.5 volts. The condition of the belts is part of this inspection. If all of this is A-ok then get a scanner and pull the codes in the PCM.
Remember once light is illuminated for a item that item no longer works. Once you've gotton to this point let me know and I'll walk you threw it. Hopefully its just a weak or incorrect battery or something along those lines. Good luck and keep me posted