THIS AUCTION IS FOR OEM 4.3 TBI LB4 "Z" ECM COMPUTER CHIP AUMH FOR ECM 16144288 I REMOVED THIS CHIP FROM A 1991 CHEVY G10 VAN THIS AUCTION IS NOT FOR THE COMPUTER JUST THE CHIP OR PROM AS THEY ARE CALLED THE 16144288 ECMS ONLY COME WITH ONE CHIP IF YOU NEED THE COMPLETE ECM WITH THE CHIP PLEASE CHECK OUT MY OTHER AUCTIONS AND EBAY STORE I HAVE ECM COMPUTERS FOR 2.8 3.1 4.3 5.0 5.7 AND 454 LITER ENGINES AND TBI FUEL INJECTORS AND TBI THROTTLEBODY SENSOR SETS. ITS ALWAYS GOOD TO HAVE SOME SPARE PARTS IN YOUR TOOL BOX IN CASE YOU BREAK DOWN. PLEASE VIEW MY OTHER AUCTIONS FOR MORE CHEVROLET SILVERADO S10 BLAZER ASTRO FORD GMC S15 JIMMY SONOMA SIERRA SAFARI DODGE RAM AND RAMCHARGER TRUCK PARTS. THANKS!!!!