I had a similar problem where the door ajar did not detect, window did not work, power lock did not work, and mirror would not adjust. To fix this I replaced the passenger door module.

I just bought a Bonneville and I wanted to share my experience with everybody in case it might be helpful. When I got it, it had a ton of electrical problems. I had no power locks (including the gas cover lock) from either the key fob or the interior buttons, the trunk release in the glove box and ...

I just bought my bonneville and have been solving numerous electrical problems. One of them is still the horn does not function when pressing the steering wheel, however if I set off the panic alarm it will sound the horn. Today I followed the instructions provided by ddalder for jumperimg the ...