seen a post on how to get radio codes now I can't find it. Any help appreciated.

 

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Information on Error Codes on Radio Display -- Their Cause and Corrective Action
1995-2005 Chevrolet Blazer

Starting in 1995, the family style radios, as well as the 12-discLLAI and 6-discLLAI (Low Level Audio Interface) changers and the 10-discFMI (FM Interface) changers, have error codes to help diagnose playback mediums.
Some systems will only have an ERR message and no other indicator. If an ERR message is encountered without any other identifier, you may review the following error codes to try to determine the cause of the error and correct it before sending the unit to the authorized service center. If ERR or E (and a number) appears on a customer's radio display, the number may give you a clue to the problem and corrective action.
Below is a list of code numbers that may appear on the unit.

Important
Not all family radios have these codes. They are dependent on the model year.

Cassette Errors[*]E10 or TIGHT TAPE: Tight tape error Cause(s): A restricted cassette tape transport or broken cassette drive belt Correction: Substitute a different cassette tape. If there still is an error code, service the unit at an ACDelco® Service Center.[*]E11 or BROKEN TAPE: Broken Tape Error Cause(s): A broken cassette tape Correction(s): Substitute a different cassette tape[*]E12 : Communication Error Cause(s): A vehicle/radio communication problem or an internal radio communication problem Correction(s): Disconnect the battery voltage to the radio then reconnect after a few minutes. If there still is an error, service the unit at an ACDelco® Service Center.[*]E13 : Tape Communication Error Cause(s): The micro-processor is reading the speed pulses from the tape deck either too fast or too slow. Correction(s): It the tape player is still playing a cassette, try a new cassette. If there is still an error, service the unit at an ACDelco® Service Center.[*]E14 or WRAPPED TAPE: Wrapped Tape Cause(s): The tape is wrapped around the capstan. This means a tape is wound up in the tape player. This error message could appear when a CD adapter is being used. Other causes could be old or damaged tapes. Long playing (90 or 120minute) tapes are thin and can stretch easily creating this condition. Correction(s): Try playing a known good quality tape. Remove the CD adapter.[*]Cln Tape Indicator Cause(s): This message appears after 50 hours of accumulated tape play. Correction(s): We suggest cleaning the tape head. Then reset the radio by depressing the eject button for five seconds. Cleaning the heads will not reset the "Cln" display. To reset the "Cln" display, push and hold the eject button for five seconds. The display will return to its normal display. [/ul]
CD Errors[*]E20 or CHECK CD : Cause(s): The CD player cannot focus on the disc or there is an internal focus problem. Correction(s): Try cleaning the disc or using a new disc. Make sure the disc is loaded correctly. The road could be too rough or there is too much humidity. If the problem is not corrected, service the unit at an ACDelco® Service Center.[*]E21 or CHECK CD : Cause(s): There is a problem with reading the disc Correction(s): Try cleaning the disc or using a new disc. Make sure the disc is loaded correctly. The road could be too rough or there is too much humidity. If there is still an error, service the unit at an ACDelco® Service Center.[*]E22 or PLAYER ERR : Cause(s): The CD motor is not handling the compact disc properly. Correction(s): Service or exchange the unit at an ACDelco® Service Center.[*]E23 or PLAYER ERR : Cause(s): There is a vehicle/radio communication problem or an internal radio communication problem. Correction(s): Disconnect battery voltage to the radio and then reconnect after a few minutes. If there is still an error, send the unit to an ACDelco® Service Center. [/ul]
[b]LLAI CD Chan

 

thanks for the help. now have a hard copy that I can lose[&:]