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June 1, 2010 Service bulletin

Buick/cadillac/chevrolet/gmc/hummer/pontiac/saturn: additional diagnostic information for U0140 or U0073

Chevrolet technical service bulletin PIT-4730A for 2007-2011 Chevrolet Silverado 1500, 2006-2011 Chevrolet Impala and 2007-2011 Chevrolet Tahoe and others.

Bulletin number
PIT-4730A
Component
Electrical system
Summary
Buick/cadillac/chevrolet/gmc/hummer/pontiac/saturn: additional diagnostic information for u0140 or u0073. Vehicle may exhibits some symptom(s) as door locks cycle while driving; intermittent no start; service stabilitrak dic message; speedometer and tachometer freeze while driving.

Owners of these vehicles have filed 4,315 complaints in the electrical category.

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