Avalanche 2500 4WD V8-8.1L VIN G (2003)
Ignition Coil: Description and Operation
Ignition Coil Mounting Brackets
The following are the 2 different types of mounting brackets.
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Melco (1), square design
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Delphi (2), round design
The ignition coil mounting brackets must match the appropriate coil type.
The following are the 2 different lengths of spark plug wire.
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Melco (1), square design-Uses a spark plug wire that is 145 mm length cable seal to cable seal.
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Delphi (2), round design-Uses a spark plug wire that is 110 mm length cable seal to cable seal.
The ignition coil wires must match the appropriate coil type.
The spark plugs are connected to their respective coils by a short secondary wire. The plugs are tipped with platinum for long wear and higher efficiency.
