Cadillac GMC Chevrolet Ignition Wire 9478UU/9478HH 41-962 Stable Transmission

Cadillac, GMC and Chevrolet V8 engine models (such as Escalade, Yukon, Suburban, etc.) ignition coil and ignition wire assembly, OEM part number 9478UU/9478HH (corresponding to 41-962), mounted between the cylinder head and ignition coil, responsible for delivering high-voltage current steadily to the spark plug to achieve precise ignition. Replacements recommended for idle jitter, acceleration hesitation, higher fuel consumption, or fault light. Installation difficulty: medium; estimated labor 1.5-2 hours; pay attention to wiring harness routing.