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2005 Buick LaCrosse Questions

Get answers to questions about your 2005 Buick LaCrosse at RepairPal. Find solutions, diagnose problems and get back on the road.

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Will a new key help? What are my options?

New engine and transmission

How do I open this door? Remote or manual switch will not unlock driver door. All other doors work.

Remote or manual switch will not unlock driver door. All other doors work.

Car has lights , but won't start until I cross jump the wire from the starter. Then it will start the rest of the day

Hear sound of a "geiger counter" from a tiny speaker on righthand side of ignition. Noticed it this morning upon turning key one click before turning over and throughout entire drive until key removal.

Car also has a 'sluggish' acceleration.

How do I tighten my tentioner. If my belt is good. And it whistles?. And does it need to be on the middle line indicatedindicated.

My engine went out in my 2005 Buick Lacrosse. I am looking for used engines online and am having a hard time locating a 3.6 liter. Can I get a 3.8 liter engine installed and if so what extra will I need in order to do so i.e. transmission change, computer, etc.?

Noone seems to find the problem please help me i have a toddler that ride in that car

Lock will neither lock or unlock using key fob but does work manually. I have auto experience and can test and repair or replace if I can get the panel off without destroying anything.