[89IROC&RS]

well im not familiar with autozone, but if im correct, they have a universal scanner, which scans every make and model with the aid of interchangeable connector tips and mass storage cartridges. so its possible they are using the wrong connector and/or mass storage cartridge. if there really is a wiring problem to the connector, say for instance a class 2 data link malfunction, or a malfunctioning BCM or PCM, that might also be the problem, if it is a wiring and/or module problem on the car, please for the love of god dont let pep boys, autozone, jiffylube, or any others anywhere near them, i did electronic diagnositc work at a chevy dealership, and fixing all their fuckups cost people lots of money. take it to the dealership, and ask them specificly for their electronics specialist to look at it. it should go to him anyway, but its best to specificily say it.