Install 03 Silverado radio into 99

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Forum Name: Vehicle Wiring Information & File Requests
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URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=40327
Printed Date: September 01, 2025 at 2:02 AM

Topic: Install 03 Silverado radio into 99

Posted By: mikepol2
Subject: Install 03 Silverado radio into 99
Date Posted: October 05, 2004 at 2:11 PM

I am trying to install the Delco factory radio/CD/cassette unit from an '03 Silverado into a '99 Silverado (new body style). The radio is a Delco 15184933 with RDS and people are saying it can't be done because of the data wire in the '03, but I'm not convinced yet. I have the radio and a mating Metra connector 71-2003-1 (a 24-pin and a 12-pin) and need to know how to match up the Metra wires with the factory harness in the '99, which has a different connector with 13 wires attached to it. Any brave installers try this before? Thanks!!!

Replies:

Posted By: mo12v
Date Posted: October 05, 2004 at 6:56 PM

Better get the BCM from the '03
The way the DATA RDS radios work is they have to be programmed. When we swap radios in New Chevy's we have to hook up the TECH 2 & download info from radio, then upload to G.M. to receive DATA, then download back into vehicle. That's just to program radio

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MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.

Posted By: mikepol2
Date Posted: October 05, 2004 at 7:18 PM

Hi Mo- What's a BCM? I planned on taking the truck to our local Chevy dealer to have it programmed after it's wired up, but I can't figure out which pins in the '03 radio connect with which pins in the '99 radio harness. I know what each color wire in the '99 harness does but not the pins on the radio. Any idea?

Posted By: mo12v
Date Posted: October 05, 2004 at 7:51 PM

Body Control Module.......then U will need the Harness which controls a lot of other components in the vehicle
Really.....It isn't gonna work

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MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.

Posted By: mikepol2
Date Posted: October 06, 2004 at 6:39 AM

Well looks like my inexpensive upgrade is turning into a major project. I called our Chevy dealer and they wanted $880.00 just for the wiring harness to accept all the new parts! Thanks for the help Mo, looks like this radio will end up on Ebay.