20 Most Recent 2003 Buick Regal Questions & Answers

If you had a emissions problem and it has been corrected and the check light is out, then it should be cleared after 200 miles.Or will just show is a inactive fault

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.

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

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

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

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.

There is a reason, and testing will reveal that.

3.8 engine below at back under an alternator.

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

Possible vacuum leak.

Inside the transmission

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

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

Inside the alternator.

Check for a low battery or bad or corroded connections.

Blown fuse?

2003 BUICK RENDEZVOUS REPAIR MANUAL for the easy solution download the pdf file

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.

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

or

A faulty ABS Brake Module.