Top 20 2003 Oldsmobile Alero Questions & Answers

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2003 Oldsmobile Alero with 3.4 engine. Where is the A/C low pressure switch location.

Question edited for clarity and joined two posts into one. Question moved to model category. Duplicate post deleted. Refresh page to see your question. Help in the link. There is a lot on the low pressure port location, but some on the switch. https://www.google.com/search?q=2003+Oldsmobile+Alero+A%2FC+low+pressure+switch+location ..
4/21/2024 10:01:57 PM • 2003 Oldsmobile... • 14 views • 0 helpful votes
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2003 Oldsmobile Alero starts and then dies. I've put new crankshaft sensor in it and fuel filter. Battery is good and the fuel pump is working. The security light isn't on, what else could it be?

Question edited for clarity and typos. Question moved to model category. It is a known issue. Fuel pumps can work, but not provide enough pressure, so you need to test with a pressure gauge. There is also a Pressure Regulator. Have a read of this. https://www.justanswer.com/oldsmobile/6cz1n-oldsmobile-alero-olds-alero-starts-dies.html Lots more here https://www.google.com/search?q=2003+Oldsmobile+Alero+starts+and+then+dies You may need an auto electrician with a pro grade scan tool computer. ..
8/9/2022 3:04:18 PM • 2003 Oldsmobile... • 206 views • 0 helpful votes
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Keys in trunk. Button inside glovebox does not work

check fuse for glove box switch --use other key ----go thru rear seat ---have dealer / locksmith ` cut new key ---
3/10/2020 12:13:30 AM • 2003 Oldsmobile... • 80 views • 0 helpful votes
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I have a 2003 Oldsmobile Aleo and it blows air hot and cold through all vents no matter if it is on AC or Defrost / Heat. I tried swapping out the Panel control switch and it didn’t change. What else can it be? Thanks.

Some fixya user told me a website reliable-store it is very good.. I used it to repair my shredder it had some spark issue which wasn't easily fixed. you can go there and try
2/26/2019 5:42:28 PM • 2003 Oldsmobile... • 348 views • 0 helpful votes
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2003 olds alero 3.4l v6 symptoms include : loss of horse power, mass hesitation, surging, un responsive idle.

I'm assuming you meant 5000 RPMs? If so it sounds like your transmission is slipping. That would also cover the other symptoms you mentioned except for unresponsive idle. I'm not quite sure what you mean by that. It's also possible that it's your computer but not as likely
10/26/2018 2:06:07 AM • 2003 Oldsmobile... • 198 views • 0 helpful votes
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How to replace ignition switch on 2003 Olds Alero without removing dash

You don't have to remove the dash. Remove the radio and the instrument cluster. Then you can unhook the ignition switch bracket and work on it through the hole where the instrument cluster was
12/22/2017 11:00:04 PM • 2003 Oldsmobile... • 1,001 views • 0 helpful votes
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I have a 2003 oldsmoble alero 3.4 that I changed motor in and don't remember where the ground wire off the battery goes

With the battery in place, the length of the earth wire should give you a guide. There will be a bolt hole somewhere close to the battery box. It will probably be located on the inner wing, (fender), or one of the mounting bolts on the very top of the suspension strut.
2/3/2018 4:47:51 PM • 2003 Oldsmobile... • 168 views • 0 helpful votes
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Alero power window cable has come off

Hello, Unfortunately there is no routing diagram. This is only sold as a complete unit (the window regulator) and is not serviced. Usually when the cable becomes dislodged it is because part of the cable plastic sheathing has cracked.
1/20/2018 5:24:03 PM • 2003 Oldsmobile... • 156 views • 0 helpful votes
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Hey I have a 2003 olds alero the flasher unit will

When you start guessing as to what the problem is , that's when you should take it to a qualified repair shop. You start replacing parts that doesn't fix the problem . The flasher problem is the multi-function switch . Is the security light lit on the instrument cluster ? The stalling problem more then likely is a IAC - idle air control valve problem , dirty throttle plate an bore , EGR valve sticking open a little . Your best bet , take your vehicle to a qualified repair shop.
1/3/2018 7:06:03 AM • 2003 Oldsmobile... • 122 views • 0 helpful votes
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My 2003 olds alero 6cyl 3.4 was running fine and then it died on me when I went to town. Now it runs ruff for about 2 or 3 seconds and won't stay running. The number 4 cylinder will not fire and there

Check fire on the coil for that cylinder. Sounds like a bad coil pack. That was just one of the things wrong with mine.
12/5/2017 8:57:03 AM • 2003 Oldsmobile... • 218 views • 0 helpful votes
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My 2003 oldsmobile alero cranks but will not start. I had a fuel pump put in 2 years ago, and the battery cables (new battery) is all in place. I replaced the upper O2 sensor a month ago. Sometimes th

Try squirting starter fluid or ether into the carb. If it takes over you might have a blocked fuel filter. Then see if you have spark. Just pull the wire and connect to an old plug or get a tester. Make sure your hands are insulated. If you have spark then check timing. Could be the coil if there's no spark. Also could be a Passlock Sensor.
9/7/2017 5:54:03 PM • 2003 Oldsmobile... • 835 views • 0 helpful votes
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2003 oldsmobile alero 3400 sfi hard starting issues

Make sure egr valve is closing propetly. Check for vacuum leaks. Do It Yourself Diagnosis and Repair
9/20/2017 12:17:49 AM • 2003 Oldsmobile... • 435 views • 0 helpful votes
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2003 olds alero 4cyl.when putting

check the relays.
11/5/2017 10:06:03 PM • 2003 Oldsmobile... • 106 views • 0 helpful votes
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My windshield wipers do not work properly.

Crossed wires
10/28/2017 8:48:03 PM • 2003 Oldsmobile... • 126 views • 0 helpful votes
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2003 olds alero will not communicate with a scan tool

Start from scratch. Remove key and retry it.
9/26/2017 10:36:04 PM • 2003 Oldsmobile... • 257 views • 0 helpful votes
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My 2003 Olds Aurora won't come to ready (evaporative system and O2 sensor indicated on OBDII.

monitoring to detect ignition and fuel related misfires that may cause emissions to increase and/or damage to the catalytic converter. Fuel System Monitoring to detect changes in fuel mixture that may cause emissions to increase. Comprehensive Component Monitoring to detect any major faults in engine sensors that may cause emissions to increase. The OBD monitors that only run under certain conditions include the EVAP monitor, HEGO monitor (Heated Exhaust Gas Oxygen sensor), and the Catalyst Efficiency monitor. Did You Unplug The Battery Both Sides And Let Sit For #0 Minutes? Or Did You Scan With A scanner And Clear The Existing Codes? Most of The Time When You Correct The Issues With Your ECM It Will Clear Up But Just Like A computer You Must Restart It to Make Changes !! Hope This Helps !! We Are Here To Help !!
8/25/2017 5:42:03 AM • 2003 Oldsmobile... • 146 views • 0 helpful votes
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I have a 2003 Olds Alero. It started overheating periodically and loosing a little fluid, so my insisted that it was the waterpump. He changed it and it still got hot I bought a thermostat and radi

So I took it out myself today to see ? took what out ,to see what ? Do the cooling fans work ? Could be the step motor that controls the temp. gauge . How are you determining that the vehicle is overheating ? Gauge on insturment cluster ? GM had bad step motors inside thier insturment cluster's . 2003 to 2006 ! Your best bet , take it to GM dealer .
7/18/2017 2:33:03 PM • 2003 Oldsmobile... • 362 views • 0 helpful votes
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Squealing Tires?

Is it a tire squeal or brake squeal?If it is brake squeal put high temp synthetic brake lube grease behind the brake pads to reduce/remove the brake squeal.This allows the pads to sit on a bed of grease and will not vibrate at the frequency which produces the squeal.
6/29/2017 11:09:02 PM • 2003 Oldsmobile... • 92 views • 0 helpful votes
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