Hi,
I'm new to GM forum just recently purchase a 1996 sse bonneville just to get around town;and if i have to travel just wanting to know how reliable the car is.Also,want to replace the rear speaker does anyone have a diagram or instruction.Can I use an 1995,97,or99 older EGR valve sensor from pull-a-part,or best to buy a new one. Recent maintainces perform oil change,new water pump,oil sending unit,and thermostat.
Gregory66 185,000 on the car.

dont know about the speaker check out the audio section, the egr can be cleaned sometimes,i spray it with carb cleaner and work the valve up and down. and the bonnies and 3800'* in general are pretty reliable.

welcome to the site if you post up some pics and fill out your sig people will be able to help you easier.

Welcome, Greg! It'* cool you're so dedicated to improving your car. Your questions will be best answered in more specific sections, which can be found further down on the main forum page.

Bonnevilles are intensely reliable, and we love all of ours. Keep up with preventative maintenance just as you would with any other car, and you might even make it to 400,000 miles. Some cars with that high mileage were driven over to the factory that shut down after years of diligently manufacturing 3800s. Everyone was disappointed since these engines are tough!

The rear speakers are 6x9s, pretty normal, but they sit on plastic risers. Just take out the stock speakers and put in any aftermarket ones. Pull up on the covers of the rear speakers to get to them, and you'll need something like a 7mm socket to unbolt them if they're not held in by screws.

The EGR valve should work from probably any year Series II 3800. If you replace the sensor once or twice and you've still got a problem, you then may have a bad MAP sensor.

Stick around and hang out a bit. We're a reasonably relaxed forum.

Thanks,firebird I clean it first will carburator cleaner be efficient?Also, it'* an intermitting with the check engine light.Trouble code PG404

Thanks,
Sir Radomir for the information it'* an intermitten problem with the check engine light stop by autozone trouble code P0404.Will clean egr valve an monitor the check engine light.As far as the rear speaker going to upgrade haven't decided on what brand.Infinity,Kenwood,Polk Audio,which has the best price.

spray it with carb cleaner and the shaft you can see in the hole and work the valve in and out a bunch of times wipe with a lint free rag and repeat a few times, if the code comes back then you may have to get a new one.

i got the polk db 6X9 '* from amazon.com for $75 they definitely need some power to sound good.

welcome to the forum.

i had a 97 Bonneville years and years ago, to replace the back speaker the mesh cover just comes off by pulling on the side of it, as for the speaker its a 6x9 mounted on the rear deck by 4 screws.

as mentioned above, EGR can be used from any series II engine, but if it keeps going wrong you definitely need to start looking somewhere else lol

its not as easy as just removing the screws and swapping old with new!! if it like mine that i just replaced,you will have 4 wires per side.driver side hook up the yellow and black to speaker and cap off the other two.and pass side hook up the light blue and dark blue.cap off the light blue with black stripe and green.