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Old 02-05-2012, 01:05 AM
ChevyTruckGuy ChevyTruckGuy is offline
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First off you need a scanner and the 3 shop manual is a must!! I say this because in them they have most of the trouble shoot guides you need! with the scanner you can read the values to see if a component is not in the right value range and may need replacing! Most common problem is the EGR water temp switch and the most common on a OBD1 truck is the ground wires I thing there are 4-6. if there not clean you can get all kinds of weird things happening! Also here is a good site for trucks! www.fullsizechevy.com
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