Ignition Coil Replacement For 2003 GMC Sierra 1500 HD

 

The 2003 GMC Sierra 1500 HD has 8 independent ignition coils. They have 8 spark plug wires connected to them. As these coils age, they can wear out, or fail. If one of these ignition coils fails, many owners notice that the others start failing not long after. This is why it is generally recommended to replace old ignition coils all at once. Each of these ignition coils locally can be a bit pricey, and that is why we are here. We have the ignition coils for much less than the local auto parts store does. Select the engine to find the coils you need at affordable pricing.