2004 CHEVY TAHOE SILVERADO GMC YUKON 5.3L ENGINE CONTROL MODULE ECU ECM 12586242 so please view them all

so please view them all for an accurate idea of condition

3L1A-12A650-HD

but have not been tested and are not guaranteed to be working

but is in good working order

but it does not affect connectivity

2004 CHEVY TAHOE SILVERADO GMC YUKON 5.3L ENGINE CONTROL MODULE ECU ECM 12586242 so please view them allBig State Auto Parts, LLC Item Details Authentic OEM component in good condition. All connectors locking tabs are fully intact. Please refer to part number (12586242) to ensure compatibility with your make and model. As with any electronic control module, THIS UNIT IS LIKELY TO REQUIRE RE PROGRAMMING TO WORK WITH YOUR SPECIFIC VEHICLE. Please consult your local dealership or authorized professional mechanic if you are uncertain about this process.