The Buick's engine does not crank when I try to start it. There is a clicking sound when I try to start it, but the engine doesn't turn over. What Do You Think?

SOURCE: clicking noise when trying to start car,battery is ok, wont start

That Clicking is the Battery causing it not to Start. You need to Replace that Battery or at Least put a Charger on it for a Couple of hours to see if you can Salvage it for a While.

SOURCE: 06 jeep commander wont crank. No interior lights,

Check your battery cables. Remove them and clean the contacts, if the ends are replacements take them apart and clean. Use a wire brush or sand paper. Make sure you remove the negative first and reinstall it last. Also check the battery and fuse links. Your problem is in there some where the battery, cable ends, cables, or a fuse link. If still no start let me know the results and we can go from there if need be.

Testimonial: "Ron, thanks for the help. I had already done what you had listed. I cannot figure out how it could work and then not work 20 seconds later "

SOURCE: 91 Buick Park Ave won't start

i just came across this problem myself the other day. i have a 91 buick park avenue that sometimes won't start. i checked several things out like cable connections and coil pack etc. etc. come to find out it was the wiring that came off the coil pack and connects to the crank sensor. the wiring that ran over top of the water pump had finally heated up so bad the coating on the wires had melted and when the engine got hot enough the wires would come in contact and send false signals to the computer not letting it start. after the car cools down and the wires contract it would start. so check the wires from the coil pack to the crank sensor to make sure the wires are not melted together.