Question about Chevrolet Silverado 2500HD
Actual codes would help more, but lean is usually a vacuum leak, possibly a dirty/bad MAP sensor (although that would be if you had lean both sides)-look for a leaking/broken vacuum line, or an intake manifold leak (use a can of carb cleaner and spray the top of the engine on the lean side).
Posted on Mar 23, 2011
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Posted on Jan 02, 2017
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