For sale is a 1980 GM shop manual. This is the real deal as it is the one used by GM dealers, written by GM and published by Helm, Inc. It is in new condition as has never been used. $59 shipped USPS Priority Mail to a USA address.
Does it have the engine controls diagnosis and repair section for the 1980 California only cars with the 5.0-liter engine? I think, back then, that stuff was in the engine emissions controls chapter.
Yes it does. That is covered in section 6E1, Emission Control System (C4) that you will note in the index photo above. Per the section description, "This section contains diagnosis and service info used for various GM engine using the Computer Controlled Catalytic Converter (C4) System.
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