Check engine light

1993 BUICK CENTURY
118,942 MILES
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THEBUICK
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My check engine light comes on every now and then and I'm trying to find the code for it. Autozone gave me a funky looking key and said to plug it in somewhere and it will flash the code. I'm no mechanic so I have no idea what to do. Any help? Picture would be great. Thanks
Mar 23, 2012 at 8:04 PM
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RASMATAZ
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The DLC is Under left side of dash, near steering column.
Mar 23, 2012 at 8:19 PM
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THEBUICK
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So where to I plug this thing in. I understand how to read the flashes I just need to know where to plug this in
Mar 23, 2012 at 8:21 PM
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DJCL
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Jump terminals a and b together turn the key on not running and the engine light will flash codes. Let me know what thay are and I will check them fore you.
Mar 23, 2012 at 11:51 PM
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THEBUICK
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My Buick is giving me code 42.
Mar 25, 2012 at 4:48 PM
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DJCL
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What size engin is this ?
Mar 25, 2012 at 5:16 PM
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THEBUICK
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3.3 sedan 6 cylinder
Mar 27, 2012 at 11:51 PM
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DJCL
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Do you have a dvom digital volt meter and a test light at your disposal. To go on we will need them.we will be leaning toward a computer or module or wireing.
Mar 28, 2012 at 12:42 AM