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robert stevens Posted on Mar 02, 2014
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2003 tahoe alternator stops charging if i rev up to 3500 or 4000 and let it idle it starts charging

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Bill Boyd

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  • Chevrolet Master 53,816 Answers
  • Posted on Mar 02, 2014
Bill Boyd
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Joined: Jan 04, 2013
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Have the alternator removed and the slip rings on the rotor cleaned and machined . Replace the brushes and have the unit bench tested . When this happens it is an indication that the brushes cannot maintain contact with the slip rings either from lost spring tension --dirt on the rings and rings badly scored

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Anonymous

  • 20 Answers
  • Posted on Aug 28, 2009

SOURCE: my 2003 Tahoe will not start without a jump.

there is a short circuit somewhere which is chewing up d battery...hope u didnt put an amp or capacitior lately or installed a radio...check d wires again

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Anonymous

  • 4 Answers
  • Posted on Jun 07, 2009

SOURCE: 2003 tahoe idles rough and stalls

might want to check your mast air flow sensor. if your check eng. light is on have the codes downloaded

Anonymous

  • 5 Answers
  • Posted on Apr 26, 2009

SOURCE: 2003 tahoe electrical problems

check fuel regulator - air intake sensor - brake cylider problems 

Anonymous

  • 1608 Answers
  • Posted on Dec 15, 2009

SOURCE: Remove alternator chevy tahoe 2003

You have to remove the belt.Also you can have it tested on the vehicle.Once you have the 2 bolts off and the belt the alternator should come off.Good luck.

Anonymous

  • 1 Answer
  • Posted on Sep 23, 2012

SOURCE: 2003 TAHOE BATTERY NOT CHARGING

How old is the battery...???' Had the same problem with my '89 Cherokee, and it was a faulty battery...Was making some kind of internal shortcut, and didn't accept charge...
Cheers.

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0helpful
1answer

2003 tahoe was hesitating to start tested the battery it would not keep the charge, changed it out the the truck would not stay on had the alternator checked its good the truck just will not stay on cant...
Check the transmission range switch
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Sep 14, 2013 • 2003 Chevrolet Tahoe
1helpful
1answer

Voltage flexuates from14volts to 11volts when 2003 tahoe is in drive and brake is apply at stop sign and also when idling
Check that the idle speed is not too low in drive . Should be around 900 rpm in neutral and the idle speed is adjuste in drive to no less than 750 rpm. IT takes rpm for the alternator to charge the battery so if you have 11 volts then the car is runnung off the battery and not the alternator. It needs 13.5 volts to charge a battery and most regultors are set at 14 vvolt to 15.5 volts. If the vehicle is runnung from the battery as I stated then items like blinkers and stop light operation will show as fluctuations on the gauge. Have the system check . Make sure the drive belt to the aklternator is correctly adjusted as a slipping belt will also cause a problem.
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Feb 06, 2013 • Cars & Trucks
0helpful
1answer

2003 TAHOE BATTERY NOT CHARGING
How old is the battery...???' Had the same problem with my '89 Cherokee, and it was a faulty battery...Was making some kind of internal shortcut, and didn't accept charge...
Cheers.
Read full answer
Sep 23, 2012 • 2003 Chevrolet Tahoe
0helpful
1answer

My 95 tahoe has an occasional ticking noise, loss of oil pressure at idle and loss of power
Prognosis is really bad, hate to tell you. Ticking comes from the valve lifters, losing lubrication due to lack of pressure and running dry. At redlights, when revs are at idle, oil pressure drops a lot, and engine really suffers. Have the vehicle taken immediately to a shop for proper diagnose and to see if engine can still be saved. The loss of power comes from the valves not actuating properly. Hydraulic lifters need oil at a decent pressure to "charge" , and if not charged, they will stay compressed, ruining valve lifting operation.
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Apr 05, 2012 • 1995 Chevrolet Tahoe
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1answer

My 2003 chevy tahoe won't start in the morning
Many possible causes....Too little info to make an intelligent suggestion. Try charging the problem vehicle's battery with jumper cables for 2 minutes with the supply vehicle running at fast idle (or about 1500-2000 RPM, if it is tachometer equipped) before you try to crank the problem vehicle on a cold morning. If it starts right up, you likely have a weak battery that needs replacing.
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Feb 13, 2012 • 2003 Chevrolet Tahoe
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1answer

Pulled 5,000 lb boat in 100 degree heat w/ 2003 Tahoe on Sunday (AC/lights/stereo, etc...). Mon a.m. Tahoe wouldn't crank- only radio & lights worked. 8 hrs later started with no problem. Let idle...
I would check battery connections, battery to motor ground, battery to body ground and motor to body ground strap connections. If you have a bad ground it can cause all kinds of electrical problems.
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Aug 10, 2010 • 2003 Chevrolet Tahoe
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1answer

Hi There, I have a 2003 Jeep Liberty 3.7L with a 5-speed manual transmisson . It was running fine and now it wont start. When I turn the key, I dont get any response. I have power to all my lights on the...
could be the battery still or it could be your battery head isnt contacting well. wen your rev the battery is good for some time and later thesame problem then i think your alternator isnt charging your battery which kills battery life span. try all this and if no charge get back to me.
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Apr 11, 2010 • 2003 Jeep Liberty
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1answer

Started my 2003 Chevrolet Tahoe this afternoon and the battery started flashing, dash said battery not charging, then brakes started messing up (felt like they were puslating)..dash then read battery not...
check ue alternator to see if its charging ur battery to check this start car and disconnect pos cable from battery if it shuts off its ur alternator
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Feb 27, 2010 • 2003 Chevrolet Tahoe
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1answer

When i start my 97 audi tt from cold and leave it to idle for about 10/15 minutes the engine cuts out because the battey runs flat, this is with no equipment turned on, it does not appear to charge at this...
Sounds like you have an alternator going bad. not producing enough voltage unless the engine RPMs are higher than Idle.
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Oct 09, 2009 • 2003 Audi TT
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1answer

My 2003 chevy tahoe, died while i was driving home. when i tried to start it, nothing happens. it doesnt try to crank or turn over, nothing happens, now my ABS and battery light is on.
OK if only 4 months old, charge it with an external battery charger. Once vehicle is running the quick and still most valid test I make is:
Running, with no accessories on, charge volts on volt meter (not dash gauge) should read between 12.9 &14volts. Turn all accessories and headlights on high beam. Volts should not read below 12.5v at idle and should not creep lower after running at any time, even after ten or fifteen minutes. If voltaqge is not as specified alternator has failed and needs replacement.
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Apr 22, 2009 • 2003 Chevrolet Tahoe
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2003 tahoe was hesitating to start tested the battery it would not keep the charge, changed it out the the truck would not stay on had the alternator checked its good the truck just will not stay on cant...

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