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The ALDL port is located on the driver's side, under the dash. You will need a GM Tech1 (or compatible) scantool to retrieve codes from either a 1994 or 1995 Beretta. This is because GM was in a transitional period between 1993-1996 to comply with the government mandated OBD-II system. The diagnostic components in those years are a combination of OBD-I and OBD-II parts, and cannot be scanned with a standard scantool.

Unfortunately, unless you know someone with such a scantool (GM Tech1, Actron CP9150, etc.), you will need to go to a GM dealer to have your codes read.

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โˆ™ 2009-08-03 18:40:58
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Q: How do you check trouble codes on a 1994 Chevy Beretta?
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