2003 04 05 Chevy Cavalier GM factory radio install & Clear CAL ERR using the Tech2 Scan Tool
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- Опубликовано: 11 июл 2024
- How to identify the correct GM part number radio head unit by model year, and then install the correct original factory radio into a final generation Chevy Cavalier. As well as how to clear the Delphi / Delco radio CAL ERR message that will often come up by using a GM Tech2 scan tool in these J-Body cars.
The CAL ERR can come up as a result of swapping an used class II RDS radio that has been refurbished or reset by a radio reseller (such refurbished radios EEPROMs are often back to a like new state and need initial setup using the GM dealer class Tech2 tool). The "CAL ERR" (Calibration Error) is one of TWO types of error messages you may encounter installing a replacement Delco radio, the other far more common one being "LOCKED" (which is the far more common error message you get from installing an used salvage yard radio). Both error messages relate to a portion of the vehicles VIN stored in the radios' EEPROM chip detected by the body control module (BCM) as having changed by your moving the radio between vehicles (which btw prompts me to point out you CANNOT clear a CAL ERR with a radio being caused by its EEPROM chip having been physically removed from the circuit board in a "hack" attempt to VIN unlock the radio previously). So this VIN relearn procedure is only for an unmodified original radio as shipped by GM.
While actually only illustrating the CAL ERR, the information and procedures in this video would also work on clearing the LOCKED error. The LOCKED one is the error message I actually was expecting to encounter when I started making this video, but got the CAL ERR instead. Go figure. Sometimes labelled a "VIN Relearn", the actual Tech2 step to clear either condition varies by model year and make. For these 2003 - 2005 J body cars it's called "Radio Setup" on the Tech2 menu and is described on page 11-122 of the GM J car service manual for 2004. The Radio Setup step is all that should be required, but it is always a good idea to also update the SPS (Service Programming System) calibration to the latest level also (think of it like updating the firmware on your smartphone). I show that as well using the TIS2000 software on a Windows PC with the Tech2.
The Tech2 Radio Setup procedure will configure the following, according to the GM service manual:
- LEARN VIN
- Diagnostic Trouble Codes
- Class 2 Radio Messages
- Country Code
- Chime Volume
- Chime Level
- 12/24 Hour Clock
While this video is performed on a 2004 Chevy Cavalier, it would be directly applicable to ANY 2003 2004 or 2005 Cavalier. The upgraded radio shown is RPO US8. The process would be indirectly applicable to many GM vehicle with the RDS type Delphi Delco Electronics class II radios used from 2000 thru 2005 in many Chevrolet, Pontiac, and Oldsmobile vehicles (the radios physical cosmetic design must appear similar to the ones I show in this video to be applicable). Of course, everything shown on the Tech2 and TIS2000 could also be done with Tech2Win using a GM MDI scan tool and TIS2Web instead.
The eBay and Amazon search links below are paid links, for which I may be compensated and earn a commission, if you choose to buy the parts and tools shown in this video thru them:
If you happen to be looking for one of these J car radios: ebay.us/6QMRAv
All compatible GM radio part numbers by RPO for 2003 - 2005 model year J cars only:
UM7 - 10315115
UN0 - 10335223 superseded by 10346316
U1C - 10315119 superseded by 22732926
US8 - 10348717
A GM dealer will charge you anywhere from $50 to $125 to do this Tech2 radio setup procedure, for not much more you can buy your own clone Tech2 scan tool and save money down the road: ebay.us/ZGCI6O
And if I've saved you some $$ here, consider some coins for the coffee tip-jar! ko-fi.com/drshock
Chapters:
0:00 - Problem overview
0:21 - Dash disassembly
10:42 - Radio removal
12:54 - Selecting compatible factory radios
19:48 - Using Tech2 to clear CAL ERR
23:09 - Using Tech2 to update radio calibration
26:04 - Radio testing
#drshock #cavalier #tech2
Disclaimer: DrShock, the alias for the human content creator for this RUclips channel, is not responsible for any damages, injuries, losses, or liabilities associated with any repairs, upgrades, or maintenance performed on yours, or any other, vehicle whatsoever. No warranty, express or implied, is made as to the accuracy or completeness of any information provided within this channel. Viewing and using the “as-is" information of this channel is totally at your own risk. Always wear personal protection equipment and follow appropriate vehicle manufacturer service manual guidelines with original manufacturer parts only when performing any repairs, upgrades, or maintenance upon any vehicle. 
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Do i truly have to go thru this entire process to put a better radio in my 04? Or is there a way around doing all that putting a better one in then the ones u listed my car doesnt have the 3rd party aux cord so i was curious also i dont have the money to huy a tech2 scanner so what are my options besides going to a shop?
If you mean the dash disassembly there's no way around that process. You would have to do all this to even install a third party radio. You can often find a radio shop on eBay that has modified the factory radio to add either an aux or even bluetooth though. There's no way around needing the Tech2 if its a factory radio and has a calibration error or is VIN locked without damaging the circuit board and losing functionality. Of course a third party radio will not have either of these situations so no Tech2 needed.
very informative/ I learned your saying that if the car only offered 3 diff. radios by delfi delco and the monsoon version isn't offered
in those three. then it won't unlock. So according to this, there is an mp3 version that your showing that's not labeled monsoon (an amplifier for each speaker being 8 speakers) and it matters if the car from the factory offered it, if it didn't then then one from a grand am
that had a combo (cd & cassette) will have a diff rpo code and won't be offered in mine 2005 sunfire so the only way i could unlock that would be to remove chip. Well good thing I'm, trying one first that they offered then.
It’s less of an unlock concern but rather that electrical communication specifications constantly changed making crossing makes and crossing years problematic. Also that module programming is tied to as-built options only. Sometimes you can get away with it with makes within the same model year range though.
Most people would not be able to do what you did. I think that's why most just buy JVC or SONY at your local Walmart or car stereo shop. Maybe the car stereo shop could do what you did.
Is there a way to do this in my repair bench? I fix them sometimes I need to replace the main board,. But how can I reprogram it ? Thank you for any help most are class 2
See if this other video I did helps answer - ruclips.net/video/ZIRefUhyJOQ/видео.html
if u buy a radio from walmart for my 2005 chevy cavalier and it has a aux port on it can I just hook it up or do I need to add something or what?
That aux port was not available back in a 2005 vintage radio, so that seller has modified the radio to add in this feature as a modification. You'll have to write them and ask what you would need. Be sure to confirm if the radio requires VIN relearn programming or not when you ask them.
I can buy a JVC aftermarket double din and install it with a output converter right? As long as it's not a factory radio from another vehicle.. correct?
No experience with aftermarket radios myself only GM/Delco.
@@DrShock ok thanks
What type of stereo I can use for the cavalier 2004?
The ones listed in the description. I list them by GM part number.
Anyone know what the little wiring plug is on the back of the radio I have a 04 and mine doesn’t have it ?
If you mean at 11:38 I mentioned that's for an aftermarket AUX input jack option for an iPod.
Any videos on a po128 code for my 03 cavalier with 200k
Nothing to do with a radio, that's P0128 and it's a thermostat related cooling system code. Try searching along those.
How do I change the time on this, I have a gmc 2008 serria with a radio just like this and the time is not correct, if you can tell me how to change the time that would be amazing
Your vehicles owners manual will have this information.
@@DrShock thank you, I’ll look at that later or tomorrow and let you know how it goes
@@DrShock thank you so much for telling me to look at the manual, I discovered today that my truck is actually not a serria and is instead a canyon and as soon as I looked up the right truck and how to change it’s radio, I got the time changed. Thanks a bunch cause now I don’t have to be confused on the time
Show me a picture of an original factory
Every shot of the radio in this video is original factory equipment.