2001 Monte Carlo you want to replace the factory stereo but you also know that the radio is needed for the message center so what must you do to replace it with a after market stereo?

Answer 1

there is a special harness kit for Monte carlos it relocates your factory radio to the trunk stupid but that's what ya gotta do. the part number is GM06B cost varys from $40-60 depending on where you buy itYou don't need to buy that module, 2001 Monte Carlo oil life reset is car on accs pump gas pedal 3 times, low tire light reset is car on accs lights on and off 4 times. you require a module from metra gmos-04 that will allow your door chrime an warning light chimes to work also on star if equipt.OR

Have a professional do it or if your up to it, you can DIY with a few mods. You will loose the radio features such as chimes and tire pressure reset etc. but, install the radio in the normal fashion into the dash. a little modification to the dash cover is sometimes necessary depending on the radio. Hook up the aftermarket radio to the GM color codes below. The ACC will not work with this type install and you must read all the way for this to work. Find a new spot in the fuse box that works off the key (a tester is needed) wire this new wire to the ACC wire of your radio. You MUST have an antenna adapter for an aftermarket radio. Reinstall the radio/dash/etc.

Car Radio Battery Constant 12v+ Wire: Orange

(There is sometimes two orange. Use the "Hot" one.

Car Radio Accessory Switched 12v+ Wire: Yellow

(The yellow wire will not work, run a new as previously mentioned)

Car Radio Ground Wire: Black

Car Radio Illumination Wire: Gray

(Use only if your new radio has this feature)

Left Front Speaker Positive Wire (+): Tan

Left Front Speaker Negative Wire (-): Gray

Right Front Speaker Positive Wire (+): Light Green

Right Front Speaker Negative Wire (-): Dark Green

Left Rear Speaker Positive Wire (+): Brown

Left Rear Speaker Negative Wire (-): Yellow

Right Rear Speaker Positive Wire (+): Dark Blue

Right Rear Speaker Negative Wire (-): Light Blue

After the install, Go to the trunk and locate the Gmos box in the trunk. (looks like a small aluminum amp) unplug the Large plug from the module (box) and notice its the same plug that was in you radio. Locate and cut the speaker wire colors above and also cut the same number of wire directly across from them on the other side of the plug. There should be two wires left in the plug when your done. Connect the wires as follows:

LF(+) Tan connects to Blue w/ white stripe

LF(-) Grey Connects to Green w/ Black stripe

RF(+) Light Green connects to Blue with black stripe

RF(-) Dark Green connects to Dark Green

LR(+) Brown connects to Tan**

LR(-) Yellow connects to White

RR(+) Dark Blue connects to red

RR (-) Light blue connects to Tan**

**There are two tan wires the same color in this group keep them beside their corresponding color where they were in the plug. If the rear speakers don't play then swap these two.

Wire nut and/or tape these and plug the plug back in the module (not that it will do anything now) and your radio is "Good-to-go"

Good luck!