New here so call me a newb if this is in the wrong place.

Can an autodimming reaview mirror be added to my 2003 bonneville SE ?

I would like to add a performance chip but don't wan't to loose gas mileage. Which ones have people used with success and where can I get one CHEAP ?

I'm sure there are more but I can't think of them right now.

An autodimming mirror can be added to just about anything. You may need to do some wiring if you don't already have it in the headliner. Maybe thats the question you're really asking?

Pretty much I know sometimes they put the wiring harness there but not the option and was hoping someone could tell me if the wiring is already there. I hate to pull down my headliner to look for fear of screwing it up.

About the chip..............

Don't waste your money on anything off of ebay.
www.intense-racing.com would be your best bet for a PCM

OMG. How in the world do you figure out what choice to make in the PCM settings ?

I had no idea.

Feeling like an idiot now

Several of us have added the mirror to our cars. I did on one of the green cars in my sig. Took about 15 minutes.

The PCM is NOT a performance mod by itself. It allows you to get the most out of OTHER mods. It'* never a first step.

sorry for the long delay.... I am easily confused..

The mirror question is this ... is the wire already there on my 2003 se ?... Like can i pull the headliner down and "poof" the wire will already be there so I can hook up the autodim mirror.

Second.... I understand... Mostly because I read the info on this site... the pcm should not be a first thing... I was curious about it cause once the warranty is done I plan on replacing the thermostat and possibly something to make it breath better. The chip confuses me as there seem to be so many things to set.

I know people have said it before but ........This Site Is Great

when i installed my auto dimming mirror in my 2000, i did not find any per-installed wiring for the optional mirror, however, i did not look very hard either.

If the wiring is not there, power ca easilly obtained from either the overhead cigarette lighter, or the sunroof power, depending on equipment.

For the PCM pick your thermostat setting and take the defaults. If you do exhaust work and remove the cat then select Rear 02 Sensor Removal DTC. Other than that your all set.