THIS SALE IS FOR OEM 4.3 CPI L35 "W" ECM COMPUTER CHIP BPKY FOR ECMS 16196395 / 16197427 FOR 1993-95 CHEVY S10 BLAZER GMC S15 JIMMY OLDS BRAVADA ASTRO AND SAFARI VANS. S10 PICKUP GMC SONOMA THIS SALE IS NOT FOR THE COMPUTER JUST THE CHIP OR PROM AS THEY ARE CALLED IF YOU NEED THE COMPLETE ECM WITH THE CHIP PLEASE CHECK OUT MY OTHER ITEMS 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 THROTTLE BODY SENSOR SETS. ITS ALWAYS GOOD TO HAVE SOME SPARE PARTS IN YOUR TOOL BOX IN CASE YOU BREAK DOWN. PLEASE VIEW MY OTHER ITEMS FOR MORE CHEVROLET SILVERADO S10 BLAZER ASTRO FORD GMC S15 JIMMY AND SIERRA SAFARI DODGE RAM AND RAMCHARGER TRUCK PARTS. THANKS!!!!