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I had a similar problem w/ a 2000 Regal. The ignition switch has a circuit that is shared with the turn signals (draw up to 9A) and also controls the ignition relay. That circuit had a bad contact in the switch. I work in electronics & I worked @ this for quite a while. Had the ignition switch changed out (about $60 for switch + labor) . You still use the same lock so no change of key is required. Changed out over 3 yrs. ago & no issues since.
What else can I help you with?
What size engine does the 2004 Buick Regal have?
The 2004 Buick Regal has a V6 engine.
How many valves does the 2004 Buick Regal have?
The 2004 Buick Regal has 12 valves.
What is the cam type of the 2004 Buick Regal?
The 2004 Buick Regal has overhead valves (OHV).
Is the 2004 Buick Regal electric or gas?
The 2004 Buick Regal is a gas-powered vehicle.
What kind of transmission does the 2004 Buick Regal have?
The 2004 Buick Regal has a 4-speed automatic.
What is the curb weight of the 2004 Buick Regal?
The curb weight of the 2004 Buick Regal is 3418 lbs..
What is the turning circle of the 2004 Buick Regal?
The 2004 Buick Regal's turning circle is 37.5 ft..
What kind of fuel does the 2004 Buick Regal use?
The 2004 Buick Regal runs on regular unleaded.
How tall is the 2004 Buick Regal?
The height of the 2004 Buick Regal is 4 ft. 8.6 in. (56.6 in.).
How long is the 2004 Buick Regal?
The 2004 Buick Regal is 16 ft. 4.2 in. (196.2 in.) long.
What is the rear shoulder room of the 2004 Buick Regal?
The 2004 Buick Regal has 57.1 in. of rear shoulder room.
What is the rear hip room of the 2004 Buick Regal?
The 2004 Buick Regal has 53.3 in. of rear hip room.
