20 Most Recent 2003 Buick Regal Questions & Answers

This is a common problem on some GM cars. There is a pressure control valve in the side cover of the transmission that needs to be replaced. The transmission does not have to be rebuilt. You will need to get a side cover gasket also.

2003 Buick Regal | Answered on Dec 23, 2018

Test the ground wire strap. Run a ground wire from battery to ground on the ignition and see if that’s the problem.

2003 Buick Regal | Answered on Jan 18, 2018

hi heartysoup2.
go to this link and you might find something might help you with this.

2003 Buick Regal loss of power and the car just stopped Google Search

2003 Buick Regal | Answered on Nov 18, 2017

Since these lights will work auto or manual is there a relay that might be bad. You mean these light's won't work auto or manual ????
Did you check the TAIL LAMP LIC LAMP fuse 15 amp . ?
Located in the right I/P fuse panel open passenger door plastic panel end of the I/P pull ,fuse box behind . This fuse takes care of the thing's your having problems with

2003 Buick Regal | Answered on Aug 18, 2017

Remove the door panel and unplug the connector to the door actuator. Probe the contacts with a voltmeter set on DC volts. Then operate the lock/unlock switch. You should see the voltage toggle from +12 volts to -12 volts. If you do, then the wiring, switch and connector are good and you have a bad actuator. Be prepared to start replacing all of them because they all operate the same number of cycles.

2003 Buick Regal | Answered on Jul 28, 2017

There is a reason, and testing will reveal that.

2003 Buick Regal | Answered on Jun 16, 2017

3.8 engine below at back under an alternator.

2003 Buick Regal | Answered on Feb 16, 2017

this also happened to me. anyone ever fix this or know the reason?

2003 Buick Regal | Answered on Feb 15, 2017

The automatic idle control valve may have stopped working or the control module that operates it.

2003 Buick Regal | Answered on Nov 22, 2016

Yes. It will corrode the aluminum engine parts. Use only unleaded regular 89 octane fuel.

2003 Buick Regal | Answered on Nov 22, 2016

Inside the alternator.

2003 Buick Regal | Answered on Sep 09, 2016

Check for a low battery or bad or corroded connections.

2003 Buick Regal | Answered on May 21, 2016

Remove the tire and inner fender well. You will see the nuts/bolt to remove. You also have to remove the screws for the plastic piece inside the door.

2003 Buick Regal | Answered on Aug 08, 2015

bad wiring to the wheel sensors which were indicated to be replaced by the ABS Brake Scan tool.


A faulty ABS Brake Module.

2003 Buick Regal | Answered on Jul 24, 2015

Do you notice any check engine lights coming on the dash when this happens, also has the vehicle had any recent repairs or any reason why this may be happening? Any input from you is helpful. I will check my resources and see what we can find out. Please advise

2003 Buick Regal | Answered on Jul 07, 2015

Not finding what you are looking for?
2003 Buick Regal Logo

373 questions posted

Ask a Question

Usually answered in minutes!

Popular Products

1999 Buick Regal
1999 Buick Regal

751 Questions

1995 Buick Regal
1995 Buick Regal

618 Questions

1998 Buick Regal
1998 Buick Regal

481 Questions

2000 Buick Regal
2000 Buick Regal

404 Questions

2001 Buick Regal
2001 Buick Regal

412 Questions

Top Buick Experts


Level 3 Expert

85239 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8984 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

Regal Buick

  • Regal Buick

Most Popular Question

transmission temperature censer located

  • Cars & Trucks