Operation CHARM
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GMC Truck
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2009
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Envoy 2WD L6-4.2L
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Repair and Diagnosis
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Powertrain Management
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PROM - Programmable Read Only Memory
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Technical Service Bulletins
PROM - Programmable Read Only Memory: Technical Service Bulletins
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A/T Controls - Highway Speed Booming/Rumbling Noises
All Technical Service Bulletins
Engine - THIS BULLETIN HAS BEEN CANCELED
A/T Controls - Highway Speed Booming/Rumbling Noises