Quote Originally Posted by lsvtec20 View Post
It is every GM that has chimes in the speakers, you dont have to use them though. The standard metra part i think it was a 98-2003 harness (been a while so im not positive on the part) will work fine. As everyone has stated you will lose only your chime
Part # is close 99-2003, ALL vehicles you lose chime yes, however MOST of the GM vehicles (newer ones) there are other things also integrated Bose, On Star, RAP (retained accessory power), back up sensor warning, and not most but a FEW of the GM 's Cadillac mostly you actually get all kinds of warning lights on the dash just by removing the radio and not using an appropriate module, and on THOSE cars there is not a cheap ass choice of buying the $20 harness the choice is buy the module or pay the extra labor to relocate the factory radio.

So the bottom line if someone does not wanna spend the money on the harness that is their choice, however for the "professionals" here we prefer to at least tell people their OPTIONS whether you use the thing or not who cares, but I feel it would be wrong to tell you to buy the $20 harness and not inform you of the safety features you COULD (depending on vehicle) be losing.

To answer the original question, on a cavalier there is no bose or on star so yes the only thing you would lose is chime, also the wire colors supplied are correct except for the 12v switched ignition that car does not have one that is what the GMOS is for to take the DATA bus (purple) wire input and give you a standard analog ignition output (the XSVI referred to will do that also), or just run your own ignition wire to the main ignition harness and use the ACC wire which is brown.