1997 Buick Regal gs Engine size 3.8L. SES Light is on.

Battery changed four months ago at shop. Car has power but still won't start. When you turn the
key you get nothing.

Answer: First be sure to check ALL fuses in all fuse blocks. There is also a crank relay that may
be bad.

Assuming the battery is good, You need to check for power at the purple wire on the starter as
someone tries to crank the engine, If it has power, then the starter is bad. If no power, then you
can have a neutral safety switch problem, or look at the dash to see if there is a security or theft
light on. If so, you have a problem in the theft system.

2000 Buick Regal 3800. Check engine light on.

Replaced Oxygen sensor's both, gas filter, air filter, oil filter and Mass airflow sensor. Code
reader-diagnostic says it is running lean and won,t pass smog test.

Answer: A common cause for a lean code is a vacuum leak. Be sure the air cleaner duct is
secure. Check for vacuum leaks on the engine.

Also check for low fuel pressure. That can also cause your code. But is will normally also have
driving problems like hard to start, hesitation or running rough.
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Buick Regal Won't Start