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2008 chevy uplander charging system failure

Charging system failure, I had a new alternator put in, same problem, battery charge keeps dropping at 10.5 volts it says battery saver active, so I parked it. Help!!!

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Posted on Jan 02, 2017

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SOURCE: new battery and alternator. Battery still won't hold charge

Check all your fuses if you had a system failure it could have blown a fuse. I am not sure on your vehicle where the fuse is in the car or under the hood it could also have a relay. You can check your alternator by checking the voltage at the back of the alternator where the big wire bolts on. You should have 14+ volts at the alternator.

Posted on May 24, 2009

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1 Answer

I replaced the starter in my 08 uplander. Now my dash reads charging system failure. my alternator checks out to be good but it wont keep my battery charged.


check that the charge wire was properly connected as some use the positive wire on the starter as the charge circuit back to the battery

Jul 25, 2017 | Cars & Trucks

1 Answer

I have a 2006 Chevy Uplander this last weekend we were headed home from my sister in-laws when we were half way home the charging system failure light came on and the


You might not have a good connection on your jump. Remove the battery and alternator and have both tested at your local parts store. My guess is the alternator is bad and the battery just needs a charge. If they both test good, you have a short somewhere in the truck.

May 30, 2017 | Cars & Trucks

1 Answer

My 07 uplander wont start most times. and the charging system failure message keep coming on


Sounds like an alternator/battery issue. When it does start, if your voltage gauge isn't close to the 14v mark or the upper end of the gauge, then your alternator isn't charging. If your alernator is charging then your battery might have a dead cell and won't take a charge from the battery. In this case the best thing to do is take the battery to your local part store and have them charge it and test it. Most of the chain stores do it for free.

Feb 21, 2017 | Cars & Trucks

1 Answer

My 2009 Chevy Malibu just had a new battery put in within the last 60 days. Then I needed a new transmission. Got it fixed. Today my battery light comes on and stays on. What is this?


The light means that your battery is not being charged properly. It could be that when the transmission was replaced, they alternator belt was not put in properly or tight enough. I'd do the following:
1. Check battery connections to make sure they are clean and tight.
2. Check the drive belt to the alternator. It should be tight and not slipping.
3. If neither of the above is the problem, fully charge the battery with a battery charger so you can drive it for a while. Don't drive it without charging or you may get stranded. Don't let the battery run all the way down either or it may ruin it.
3. Check alternator output by driving to a nearby auto store or the place you had it repaired. They usually can check your charging system for free. The alternator could have decided to malfunction, although it's pretty new.
Good luck...

Jan 03, 2017 | AC Cars & Trucks

1 Answer

Why did it stop running after intermittent charging system failure?


If the charging system was not working, it is possible the battery drained enough to have caused this problem. If the computer senses low enough voltage, it will shut the vehicle down to protect the electronics from being damaged

Jan 29, 2016 | 2005 Chevrolet Uplander

1 Answer

My 2008 Chevy uplander I change alternator and the battery excellent but the alternator fail to charge


You need to replace the alternator my friend. Battery may be holding a charge for a short time. But if the alternator is not feeding back to the battery the car will start but only run for a short time.

Aug 03, 2014 | Cars & Trucks

1 Answer

Alternator


Vehicles: any failing to keep its battery charged.

A vehicle unable to charge its own battery has one of 4 problems:
(a) alternator failure
(b) voltage regulator failure
(c) battery failure
(d) wiring problem between battery and alternator/voltage regulator.

One most modern vehicles (including 2002 Lexus RX300 - 2WD and AWD), the voltage regulator is an integral component of the alternator and is not separately serviceable.

In the US, one can get a free "charging system diagnosis" from the popular auto parts chains: AutoZone, Advance Auto Parts & Pep Boys. You needn't remove any parts from the car to get this diagnostic, since they can attach a diagnostic meter to the charging system in the parking lot. This diagnostic aid will tell you exactly which component has failed - battery, alternator or voltage regulator.

In case the vehicle is immobile, one can DIY (do it yourself) the diagnosis.
(a) inspect the wiring for corrosion/loose connections/loose connectors/etc.
(b) check alternator belt/pulley - if drive belt is properly turning the alternator pulley (no slippage/misrouting/etc.), then the mechanical tests are complete, and you'll need to continue testing the electrical performance of the charging system components.
(c) first component to test: battery
DIY test 1: remove battery from car and put battery on a 120VAC automotive battery charger and charge it fully (or just check it in the car with motor off, since the car's charging system is a type of automotive battery charger).
test parameter: a fully charged lead-acid automotive battery should read 12.45 volts on a VOM/DMM
DIY test 2: disassemble battery out of car after driving it to one of the auto parts chain stores (Advance/AutoZone/Pep Boys) for a free battery test. These testers will test the battery under load, which is not possible with just a DMM.
(d) if wiring is good, and battery tests good under load, then
the failed component is the alternator/voltage regulator - by process of elimination.
(e) DIY test 3: direct alternator/voltage regulator test (car must start and idle successfully to perform this test)
Start the car, and put a VOM/DMM across the terminals of the battery. Since the car is running, you'll be reading the output voltage of the alternator and not the output voltage of the battery. The acceptable ranges for alternator/voltage regulator output are:

ALTERNATOR CHARGING VOLTAGE

Most alternators that are charging properly should produce a voltage of about 13.8 to 14.2 volts at idle with the lights and accessories off. Always refer to the vehicle manufacturer's specifications. Many Asian vehicles, for example, have higher charging voltages of around 15 volts.

When the engine is first started, the charging voltage should rise quickly to about two volts above base battery voltage, then taper off, leveling out at the specified voltage.

The exact charging voltage will vary according to the battery's state of charge, the load on the vehicle's electrical system, and temperature. The lower the temperature the higher the charging voltage, and the higher the temperature the lower the charging voltage. The "normal" charging voltage on a typical application might be 13.9 to 15.1 volts at 77 degrees F. But at 20 degrees F. below zero, the charging voltage might be 14.9 to 15.8 volts. On a hot engine on a hot day, the normal charging voltage might drop to 13.5 to 14.3 volts.

Here are the full specs for installation of the 2002 Lexus RX300 alternator - you may be able to check these specs yourself (with a torque wrench), or pass them along to your mechanic.

Note: the VIN 8th digit should be "F" for the 2002 Lexus RX300 (2WD & AWD)

2002 Lexus RX300 (2WD and AWD) - 3.0L Engine, VIN "F" SFI DOHC

Alternator

Drive belt. Tension the belt to 170-180 lbs. for a new belt or 95-135 lbs. for a used belt.
Adjusting alternator lockbolt. Tighten the bolt to 13 ft.-lbs. (18 Nm).
Alternator pivot bolt. Tighten the bolt to 41 ft.-lbs. (56 Nm).

Glossary of acronyms
--------------------------------
DIY = do it yourself
DMM = Digital Multimeter
DOHC = Dual Overhead Cam
SFI = Sequential Fuel Injection
VOM = Volt Ohmmeter

References
----------------
How to test a Car Alternator - todayifoundout.com

Alternator & Charging System Checks - aa1car.com

Dec 26, 2011 | 2002 Lexus RX 300

5 Answers

I have been getting Charging System Failure messages on my instrument panel and when this happens the steering freezes up (no power steering). I have had it into the dealer and they changed the alternator...


your idle air controller valve on the throttle body may be no good.if the idle speed drops too low,the alternator will have no output,and the steering rack which on the uplander i believe is electric like the cobalt,will not put out enough drive.if you shut off the vehicle,but leave the ignition on,and it has an electric rack,the steering should still work.if it doesnt it is hydraulic assist.if the idle speed goes to say 400 rpm,the power steering will not work .when this happens,check the tachometer what the rpm is...

Jul 13, 2009 | 2007 Chevrolet Uplander

2 Answers

Charge system failer message came on while i was driving


Have the battery tested with and without a load. The alternator can be checked at this time as well.

Jun 11, 2009 | 2007 Chevrolet Uplander

1 Answer

New battery and alternator. Battery still won't hold charge


Check all your fuses if you had a system failure it could have blown a fuse. I am not sure on your vehicle where the fuse is in the car or under the hood it could also have a relay. You can check your alternator by checking the voltage at the back of the alternator where the big wire bolts on. You should have 14+ volts at the alternator.

May 24, 2009 | 2007 Chevrolet Uplander

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