Question about 2004 GMC Envoy

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ALTERNATOR??? WHEN I START MY ENVOY XUV, MY VOLTAGE STAYS LOW FOR 2-4 SECOND AND THEN BOUNCES TO NORMAL...IS THIS A INDICATION THAT MY ALT. IS GOING OUT. I JUST INSTALLED A NEW BATTERY 2 MONTHS AGO. THANK YOU, SHELLEY

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No i dont think your alternator is going out but you can test it easily there at home simply by taking the pos battery cable loose while the vehicle is running...if it continues to run it means he alt is good if it dies then you wil need a new alternator.its a sure fire way to know if its good or bad.

Posted on Jan 20, 2009

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2004 gmc envoy xuv , battery light stays on , replaced battery and checked alternator charging fine


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

Aug 25, 2015 | GMC Cars & Trucks

1 Answer

I have a 2010 implala the battery and alternater is checking out to be good but the battery go low sometimes


You mean the voltage drops while driving? If an acessory is turning on it will cause that to happen, if it returns to normal that's okay. If it stays low, it's an indicator that the alternator is starting to go out.

May 10, 2014 | 2010 Chevrolet Impala

1 Answer

The "ALT" light came on the dash. What does it mean. It came on for only 2 seconds and then went out.


alt is short for Alternator or the charging system was not working properly for 2 seconds.
It should go on when the ignition is on and the car has not been started, yet, to test the lamp.

It's possible the belt was slipping, or the voltage regulator was intermittently not charging, or the alternator is going bad.

However, if it doesn't stay lit while the car is running and you do not experience any starting or driveability issues, don't worry about it just yet. It could be just a glitch that won't come back for a long time.

Good luck on driving your vehicle.

Oct 12, 2010 | 2005 Mazda 6

2 Answers

I have a 96 ford explorer I just replaced the battery and the alternator in it. When starrted the battery lite stays on and the alternator does not charge it. Is there a linkable fuse or something I am...


Trace all of the wires that are attached to the alternator. If there is a fusible link or a broken wire you will find it. If the alternator is charging but something else is wrong the alternator will pull a steel wrench toward it. You did not mention the voltage regulator. You will find it when tracing your wires. Look it over carefully. Voltage regulators fail keeping the alternator from working. Parts stores have regulators and they are easy to install.

Mar 21, 2010 | 1996 Ford Explorer

1 Answer

04 Envoy xuv 4 wh. drv. stays in 4 wh drv. HI


Try putting your transmission in neutral and slowly shifting the 4wd selector to each position but you have to wait a few seconds between selsctions as it has to go through your vehicles computer, shifting to fast will cause your symptoms. I hope this helped you out. Roger

Feb 08, 2010 | 2004 GMC Canyon

2 Answers

Charging gauge bouncing back and forth starts after jump


sounds like a shorted field in the alternator

Nov 07, 2009 | 1981 Ford F 150

2 Answers

1998 k1500 5.7l 105a alternator. replaced


Now change the sulfated batery for a new one.
Vitally

Sep 09, 2009 | 1998 Chevrolet K1500

1 Answer

Just installed a new alternater and the battery gadge is reding discharge I had the battery checked and its good. Can you help


Check the 'Bat' / 'Charge'/ 'Alt' indicator on the dash panel lights when the vehicle ignition is switched on prior to starting the engine.
This indicator should extinguish within approx 1 second of starting engine.

If the indicator is not operating the alternator cannot provide charge current - check:-
1) the wiring connections to the new alternator,
2) the indicator lamp is not blown,
3) the alternator is properly grounded.

If the indicator light works normally, check the output voltage of the alternator is approx 14.5v when the motor is running.
If its about 14.5v, the battery should be charging.

Aug 12, 2009 | 2003 Chevrolet Tahoe

1 Answer

2004 GMC XUV rear air shock failure


chances are that your leveling sensor is the problem this is located on the shocks themselves.

Sep 20, 2008 | 2004 GMC Envoy

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