1985 GMC S15 Data Link Question

1985 GMC S15
190,000 MILES • 4 CYL • 2WD • MANUAL
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IXTHUS
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My Data Link Connector only has 4 wires connected to it. White w/black stripe, Black w/white stripe, Orange, and Tan w/white stripe. I need to check my trouble codes but can't. Are the wires hard wired to the ECM or can you just easily plug in a new ALDL. Thanks.
Oct 1, 2010 at 9:33 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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