Do you have the instructions please for activating the 2003 Buick Regal LS remote control made by Delphi in Canada: 342101021779?

SOURCE: 2001 Buick Regal LS windshield washer fluid does not spray

There are a number of different issues that could cause this.

-The circuit for the wiper should be the same as the washer; same fuse. -I'd suggest trying to run the washer while the hood is open and the engine off. If it runs, you should hear a dull whine.(a 2nd person might be of use to help look and listen)...(find the pump by following the hoses from the wipers to a unit mounted close to the dashboard in the engine compartment)
-If it runs, check to see if any fluid is coming from a hose that might have become disconnected.
-If the pump runs, and if you see no fluid coming from anywhere, and if you can reach the hose connected to the washer pump, pull that hose off the pump. Try running the pump again to see if anything comes out in a good stream.
-If the pump doesn't run at all, check to make sure the connector hasn't come loose.
-If the pump still doesn't run, check to see if you have 12 volts at the connector at the pump. A simple check can be done with an auto bulb connected to the plug at the motor while the pump switch is pushed.
-If you have power at that point, you likely need to replace the pump and motor.(depending upon the age of vehicle & your mechanical abilities...a call to a local wrecking yard is suggested ..atleast to compare the cost vs. new)

hope that helps

SOURCE: signal bulb on 2003 buick regal

To change front turn signal –
open the hood; look in back of headlight; two white clips; pull straight up, and then whole headlight comes out including turn signal; it is all one unit; remove rubber cover, then you take bulb out of unit. Mechanism that bulb fits in will need to be turned clockwise (looking from the front) and pulled to get it out of the larger unit holding all lights. Be sure and put rubber cover back on before re-inserting the two white clips.

SOURCE: 98 buick regal ls - po442 obd code

Usually the source of the leak is the gas cap (either loose or defective) but if that doesn't apply to your issue then the canister is next to the gas tank.

SOURCE: 2001 buick regal ls - mileage dash lights are out

It is your Instrument cluster, see my answers to this question and write me if you have any more questions, it cost me a total of no more than $15 dollars to fix it myself, took be about one hour.

SOURCE: 99 Buick Regal LS dual climate control. No heat passenger side.

the motor for the passenger side
blend door is shot