1991 GMC Sonoma Ignition Boxes & Controllers
![GMC Sonoma Ignition Boxes & Controllers - 1991](https://ic.carid.com/pages/control-modules/performance-ignition-boxes-year_0.jpg)
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- MSD®Ignition Control Quick Installation HarnessGMC Sonoma 1991, Ignition Control Quick Installation Harness by MSD®. External Dual Connector. Plug-In. MSD Ignition Controls are easy to install, but we also offer several direct plug-in Harnesses for late model vehicles! The Harnesses...Splice free installationPlugs directly into factory coil$59.95
1991 GMC Sonoma Models