Where is the brain box on a 2002 GMC Yukon XL Denali
Brain box for what ? engine computer , BCM - body control module , air bag , ABS , instrument cluster etc... there are a number of brain boxes on your vehicle , an it takes a qualified trained technician to diagnose an repair these systems . Your best bet , take it to a qualified repair shop that knows the difference between a brain box an a PCM / ECM or BCM
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