Description 1992-2002 GM 6.5L Diesel Oil Pressure Switch AP63419 Alliant Power part number AP63419 Engine Oil Pressure switch (EOP) for 1992-2002 Chevrolet GMC 6.5L diesel engines. This oil pressure switch was used from 1992 through 2002 on the GM 6.5L engines. This switch had two functions. One was to send the oil pressure signal to the dash mounted gauge, and the other was to signal the fuel feed pump to turn on. Many times we have seen the dash gauge working, but the feed pump was not turning on. We have also seen both not working, so it can vary. The fuel injection pump in the valley of the engine does have a mechanical pump that will pull some fuel into the injection pump even if the electrical feed pump on the frame rail is not working. Engine performance will greatly suffer, especially when additional power is needed to tow or accelerate quickly. We recommend changing the oil pressure switch each time you change the fuel feed pump. A simple quick test to see if your feed pump is working is to open the air bleeder screw on the fuel filter. Then turn the key on and see if there is fuel coming out. If so, the pump is working. You can hook up a pressure gauge, and you should see a positive 3 to 5 PSI. Alliant Power has decades of experience in the diesel industry and has emerged as a trusted and leading brand, dedicated to delivering innovative and reliable products to meet the diverse needs of customers worldwide. Whether it’s agriculture, construction, transportation, or industrial applications, our commitment to excellence ensures their products are the highest quality power solutions. Applications: 1987 – 1989 Buick Electra 1989 – 1989 Buick Electra Estate Wagon 1987 – 1990 Buick Lesabre 1991 – 1994 Buick Regal 2007 – 2007 Buick Rendezvous 1987 – 1989 Buick Skyhawk 1987 – 1988 Buick Skylark 1990 – 1990 Buick Skylark 1992 – 1995 Buick Skylark 1987 – 1987 Buick Somerset / Somerset Regal 1999 – 2000 Cadillac Escalade 1985 – 1987 Chevrolet Astro Van 1989 – 2000 Chevrolet Astro Van 1988 – 1996 Chevrolet Beretta 1995 – 1997 Chevrolet Blazer 1992 – 1994 Chevrolet Blazer K1500 1/2 Ton 1992 – 1994 Chevrolet Blazer S10 2WD 1992 – 1994 Chevrolet Blazer T10 4WD 1990 – 1999 Chevrolet C1500 1/2 Ton – Pickup 1990 – 2000 Chevrolet C2500 3/4 Ton – Pickup 1990 – 2000 Chevrolet C3500 1 Ton – Pickup 1991 – 2002 Chevrolet C3500HD 1 Ton Truck 1993 – 1994 Chevrolet Camaro 1994 – 1996 Chevrolet Caprice 1988 – 1994 Chevrolet Cavalier 1994 – 1996 Chevrolet Concours (Non-US/Canada) 1988 – 1996 Chevrolet Corsica 1991 – 1996 Chevrolet Corvette 1996 – 2001 Chevrolet Express 1500 1/2 Ton – Van 1996 – 1999 Chevrolet Express 2500 3/4 Ton – Van 1996 – 1999 Chevrolet Express 3500 1 Ton – Van 1990 – 1995 Chevrolet G10/1500 1/2 Ton – Van 1990 – 1995 Chevrolet G10/1500 1/2 Ton Sport Van 1990 – 1995 Chevrolet G20/2500 3/4 Ton – Van 1997 – 1998 Chevrolet G20/2500 3/4 Ton – Van 1990 – 1995 Chevrolet G20/2500 3/4 Ton Sport Van 1990 – 1999 Chevrolet G30/3500 1 Ton – Van 1990 – 1996 Chevrolet G30/3500 1 Ton Sport Van 1993 – 1995 Chevrolet G30HD 1 Ton 1990 – 1999 Chevrolet K1500 1/2 Ton 4WD – Pickup 1990 – 2000 Chevrolet K2500 3/4 Ton 4WD – Pickup 1990 – 2000 Chevrolet K3500 1 Ton 4WD – Pickup 1987 – 1995 Chevrolet LLV (U.S.P.S) 1990 – 1994 Chevrolet Lumina 1991 – 1992 Chevrolet Lumina APV 1990 – 1999 Chevrolet P30 1 Ton – Step Van 2001 – 2001 Chevrolet P30 1 Ton – Step Van 1989 – 1989 Chevrolet R2500 3/4 Ton – Pickup 1989 – 1991 Chevrolet R3500 1 Ton – Pickup 1989 – 1998 Chevrolet S10 – Pickup 2000 – 2002 Chevrolet Sonora (Non-US/Canada) 1992 – 1999 Chevrolet Suburban C1500 1/2 Ton 1992 – 1999 Chevrolet Suburban C2500 3/4 Ton 1992 – 1999 Chevrolet Suburban K1500 1/2 Ton 4WD 1992 – 1999 Chevrolet Suburban K2500 3/4 Ton 4WD 1989 – 1991 Chevrolet Suburban R1500 1/2 Ton 1989 – 1991 Chevrolet Suburban R2500 3/4 Ton 1989 – 1990 Chevrolet Suburban V1500 1/2 Ton 4WD 1989 – 1990 Chevrolet Suburban V2500 3/4 Ton 4WD 1995 – 1999 Chevrolet Tahoe 1989 – 1991 Chevrolet V3500 1 Ton 4WD – Pickup 1990 – 1999 GMC C1500 1/2 Ton – Pickup 1990 – 2000 GMC C2500 3/4 Ton – Pickup 1990 – 2002 GMC C3500 1 Ton – Pickup 1992 – 2002 GMC C3500HD 1 Ton Truck 1998 – 1998 GMC Envoy 1990 – 1995 GMC G1500 Rally Wagon – Van 1990 – 1995 GMC G1500 Vandura Cargo – Van 1990 – 1995 GMC G2500 Rally Wagon – Van 1990 – 1995 GMC G2500 Vandura Cargo – Van 1990 – 1996 GMC G3500 1 Ton – Van 1990 – 1996 GMC G3500 1 Ton Rally Wagon – Van 1990 – 1995 GMC G3500 1 Ton Vandura Cargo – Van 1995 – 1998 GMC Jimmy 1990 – 1990 GMC Jimmy S15 2WD 1992 – 1993 GMC Jimmy S15 2WD 1990 – 1990 GMC Jimmy T15 4WD 1992 – 1994 GMC Jimmy T15 4WD 1990 – 1999 GMC K1500 1/2 Ton 4WD – Pickup 1990 – 2000 GMC K2500 3/4 Ton 4WD – Pickup 1990 – 2000 GMC K3500 1 Ton 4WD – Pickup 1990 – 1999 GMC P3500 1 Ton – Step Van 1989 – 1989 GMC R2500 3/4 Ton – Pickup 1989 – 1990 GMC R3500 1 Ton – Pickup 1988 – 1990 GMC S15 – Pickup 1989 – 2000 GMC Safari Van 1996 – 1998 GMC Savana 1500 1/2 Ton – Van 2000 – 2001 GMC Savana 1500 1/2 Ton – Van 1996 – 2001 GMC Savana 2500 3/4 Ton – Van 1996 – 1998 GMC Savana 3500 1 Ton – Van 2000 – 2001 GMC Savana 3500 1 Ton – Van 1991 – 1998 GMC Sonoma 1992 – 1999 GMC Suburban C1500 1/2 Ton 1992 – 1999 GMC Suburban C2500 3/4 Ton 1992 – 1999 GMC Suburban K1500 1/2 Ton 4WD 1992 – 1999 GMC Suburban K2500 3/4 Ton 4WD 1989 – 1990 GMC Suburban R1500 1/2 Ton 1989 – 1990 GMC Suburban R2500 3/4 Ton 1989 – 1990 GMC Suburban V1500 1/2 Ton 4WD 1989 – 1990 GMC Suburban V2500 3/4 Ton 4WD 1992 – 1992 GMC Typhoon 1989 – 1990 GMC V3500 1 Ton 4WD – Pickup 1999 – 2003 GMC W3500 1 Ton Tilt Cab 1992 – 1999 GMC Yukon Cross-Reference Numbers: 10096169 10096178 10096200 10137630 10191433 10201490 10205675 10205676 10207183 10243574 12555492 125554952 1635477 1643532 1643552 1647135 19244501 22568444 2278315 24575160 63419 8125531750 8125555340 AP63419 D1808A OPS112 PS245 PS245T If we do not have this part in stock, or it shows on back order, don’t worry. Huckstorf Diesel receives shipments from our suppliers daily. We also have the ability to get parts drop-shipped directly to you from the closest warehouse or the manufacturer. We are also able to source scarce products nationwide and globally quickly. Let us help you find those hard to find parts. Find all your diesel performance, repair, and upgrade needs here, online or in person at Huckstorf Diesel’s sales, installation, and repair center located in Franklin / Milwaukee, Wisconsin USA.
