Gmc sierra fuel pump relay location

1991 Topkick 366 fuel pump relay. For the life of me I cannot find the fuel pump relay. I had seen somewhere that it is supposed to be on a cross member in front of the drivers side fuel tank. I dont have a drivers side fuel tank and there is no relay on any cross member under the truck. It is not on the firewall where I thought that it would be.

Fuse box diagram (fuse layout), location and assignment of fuses and relays Chevrolet Silverado, GMC Sierra 1500, 2500HD, 3500HD (2007-2013).Duralast Relay 19264. Part # 19264. SKU # 297298. Limited-Lifetime Warranty. Check if this fits your GMC Sierra 2500 HD. Select store. for pickup availability. Standard Delivery by Apr. 30. Add TO CART.When i bypass the fuel pump relay the pump doesn't do anything. But when i hook the fuel pump directly to the battery it works. What else can i check to get the truck up and running. Replaced all fuel lines. ... Chevy Silverado and GMC Sierra Forum. 1.4M posts 181.3K members Since 2009 A forum community dedicated to Chevrolet Silverado and GMC ...D. davester3500. 8450 posts · Joined 2015. #2 · Apr 9, 2023. The fuel pump should get energized just turning the key on, engine doesn't need to be cranked. I would suggest probing the relay pins and fuse pins to check that they are getting power/ground appropriately. After that, I would suggest subscribing to the full-service manual and ...The fuel pump control module is a relay that releases power to operate the fuel pump. The fuel pump control module is part of the constant control relay module, or CCRM.

You have a fuel pump control module instead of a relay. What you can do is disconnect the fuel pump control module and connect power to the wires that go to the fuel pump. The fuel pump control module (FPCM) is located on the frame near the rear of the truck. You need to lower the spare tire to get to the module. When you get to the module ...Ask Your Own GM Question. auto. Okay, check for power at the fuel pump connections shown here on the diagram, in front and behind the relay. Trace the wire to the ECM and be sure the wiring is okay and has a good connection to the PCM. Attachment: 2013-08-21_023911_1993_chevrolet_k15002.pdf.Sort by Oldest first. W. Welcher774. 4944 posts · Joined 2013. #2 · Apr 2, 2014. I have the same thing. Under your driver side rear bumper by spare tire area there is a Ficm fuel injection control module, this takes the place of the relay. So nothing to worry about. This is an older thread, you may not receive a response, and could be ...Jan 12, 2017 · Instrument Panel Fuse Block. The fuse block access door is on the driver’s side edge of the instrument panel. Pull off the cover to access the fuse block. GMC Sierra mk1 – fuse box – instrument panel. Fuse/Circuit Breaker. Usage. 1. Stop/TCC Switch, Buzzer, CHMSL, Hazard Lamps, Stoplamps. 2. Bypassing fuel pump relay. 1999 k1500 5.7. Would not start and fuel pump would not kick on when key in run position. Went through all the passlock relearn scemes to no avail so to test pump i put power directly to it and it ran but sounded like crap. Pump quit and could not get it to run again.29 Oct 2021 ... Well here is a quick video showing you where your Fuel Pump Relay is Located. This should also work on 2000 to 2006 GMC, Truck,Yukon, Denali, ...Yes, you can TEMPARALLY jump the switch for testing. If you are not getting + voltage at the pump there is a plug by the master cylinder booster for testing. If you are not getting + voltage on the switched side of the relay you can supply power there for testing. Larry - Cleveland. 2009, 2500HD, 6.0 L, 4x4, Ext Cab, Aluminium FlatBed.

On average, the cost for a GMC Sierra 2500 HD Fuel Pump Relay Replacement is $100 with $5 for parts and $95 for labor. Prices may vary depending on your location. Car Service Estimate Shop/Dealer Price; 2017 GMC Sierra 2500 HD V8-6.0L: Service type Fuel Pump Relay Replacement:The 2011 GMC Sierra has 3 different fuse boxes: Instrument Panel Fuse Block diagram. ... Secondary Fuel Pump (Ignition) Fuse FMX/JCase . 57. Cooling Fan 1. Fuse FMX/JCase . 58. Not Used. ... Relay . FAN HI. Cooling Fan High Speed. Relay . FAN LO. Cooling Fan Low Speed. Relay . FAN CNTRL. Cooling Fan Control.This is showing you how to bypass the fuel pump relay on your 1997+ W-Body vehicle to keep the pump running for any reason necessary. Like us on Facebook htt...The gas engine models appear to have a fuel pump control and a fuel pump. The electrical manual - GM UPFITTER - Body Builder Manuals - does show a pin on the ECM having an output to the fuse and relay on circuit 465 for fuel pump relay control, but no mention of circuit 465 anywhere else. However, it shows this location on the truck …

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1) remove the relay, 2) disconnect the PCM connector. 3) You have to test continuity of this wire by conneting your multimeter ( set to ohms) between terminal #9 at the PCM connector and. corresponding terminal in the fuse box relay socket. Ask Your Own GMC Question.FUSE BOX LOCATION ON A 1993 1994 1995 1996 1997 1998 1999 2000 GMC SIERRAPLEASE SUBSCRIBE!!!#GMC #GMCSIERRA #GMCFUSEBOXLOCATIONWHERE DO I FIND THE FUSE ON A GMCNo power to fuel pump, constant, o5, 05, fuse relay wire harness plug, noPart 1 -testing the fuel pump relay (1997-1999 chevy/gmc pick up and Silverado locatedFuel pump location relay gmc sierra 1500 cargurus fuse helpful found people.I just finished replacing the fpcm on my 08 Sierra. I got the new programmed module from GMFlash. As soon as I got the new module, I went out and plugged it in to see if it worked. The truck fired right up, and I thought my problem was fixed. After installing the module under the back under the truck, however, I got in to start it, and the ...

Yes, the VIN code is part of the VIN#. Have him spray carburetor cleaner into the air intake and see if that keeps the engine running. If so, he has a fuel delivery issue. No matter which engine (VIN code) it is, the fuel pump relay is located in or near the main relay/fuse/junction box. The code basically tells us which location in the box it is.2000 GMC Sierra fuse box diagram. The 2000 GMC Sierra has 3 different fuse boxes: ... Fuel Pump (Relay) Fuse MINI . 02 A. Oxygen Sensors [Gasoline Engine] Fuse MINI . 02 B. Oxygen Sensors [Gasoline Engine] Fuse MINI . LR PRK. Left Rear Parking Lamps. Fuse MINI . RR DEFOG. Rear Window Defogger, Heated Mirrors.gmc sierra 1500 fuel pump relay location. Report; Follow; Asked by djh65 Jul 30, 2011 at 01:55 PM about the 2008 GMC Sierra 1500. Question type: Maintenance & Repair. where is the fuel pump relay on a 2008 sierra 1500 c/cab 4x4. 2 Answers. 19,925 Report; Mike answered 12 years agoAbout Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...The fuel pump relay is wired in parallel with the oil pressure switch located adjacent to the distributor. The oil pressure switch is a redundant, fail-safe backup should the relay fail. TBI_Noid_Light.jpg (2.96 kB, 204x204 - viewed 1253 times.)The fuel pump driver module is located above the spare tire on a bracket. There are also 2 fuses that supply power to it, and they are labeled "ECM IGN" (15 amp) and "FPPM" (30 amp) in my info. Ask Your Own Chevy Question.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...The 2010 GMC Sierra has 3 different fuse boxes: Instrument Panel Fuse Block diagram. Center Instrument Panel Fuse Block diagram. Underhood Fuse Block diagram. GMC Sierra fuse box diagrams change across years, pick the right year of your vehicle: Instrument Panel Fuse Block. Type.

gmc sierra 1500 fuel pump relay location 2 Answers. where is the fuel pump relay on a 2008 sierra 1500 c/cab 4x4. 2008 GMC Sierra 1500-Maintenance & Repair. 2010 GMC Sierra crew cab 4x4 Z71 - low oil pressure 4 Answers.

SOURCE: fuel pump fuse located on 1997 gmc sierra. The fuse is actually a Relay Switch and its located in the Fuse Relay Center on the driverside of the engine compartment. The Black Box is labled Fuse Relay Center, the diagram on the cap displays which Relay is the Fuel Pump relay...the Relay switch is usually $8-$15 depending on where you ...Jan 28, 2020 · Make sure you click the THANKS button under the video screen if this video helped you or "saved your life." No matter what monetized channel it is!This is a ... To set the P461 and P463, the sensor voltage has to be above 3.5v for at least 30 seconds. When this happens, the fuel gauge defaults to empty. A defective level sensor will likely not set the P0463. Chances are the problem is in the wiring or connectors at the sensor or the ECM.Underhood Fuse Block. The underhood fuse block in the engine compartment on the driver’s side of the vehicle near the battery. *1 — Gasoline Engine and Diesel Engine. *2 — Gasoline Engine; ECMRPV — Diesel Engine. *3 — Gasoline Engine; FUEL HT — Diesel Engine. *4 — Gasoline Engine; ECM I — Diesel Engine. Auxiliary Power (Single ...PRICE: 10.49. $1049. Free In-Store Pick Up. SELECT STORE. Home Delivery. Not Available. Add TO CART. 2015 GMC Sierra 1500 Fuel Pump Relay 2017 GMC Sierra 1500 Fuel Pump Relay. Equip cars, trucks & SUVs with 2016 GMC Sierra 1500 Fuel Pump Relay from AutoZone.Aug 10, 2017 · So far all of the info I've found in the manuals is kind of vague but if you pull it and the truck won't run, so it's kind of important, whatever it does. 07 GMC Sierra Classic (LBZ) Duramax Dually Crewcab 4X4, FASS Titanium 95, Ohio Diesel Parts Tank Sump, bypass engine oil filter, synthetic lubes; 84 Chevy 6.2L 1.25 Ton (Army CUCV) with Banks ... 8 Feb 2024 ... GMC YUKON XL FUEL PUMP FUSE LOCATION ... BAD FUEL PUMP RELAY SYMPTOMS. Dr Cool Auto ... P0300 Random misfire code Repair , 2001 GMC sierra 5.3 ...Where is the fuel pump reset switch located on a 1999 gmc sierra pickup? Updated: 10/22/2022. Wiki User. ∙ 14y ago. Best Answer. Gmc does not use inertia/reset switches. Wiki User. ∙ 14y ago.2000 GMC Sierra fuse box diagram. The 2000 GMC Sierra has 3 different fuse boxes: ... Fuel Pump (Relay) Fuse MINI . 02 A. Oxygen Sensors [Gasoline Engine] Fuse MINI . 02 B. Oxygen Sensors [Gasoline Engine] Fuse MINI . LR PRK. Left Rear Parking Lamps. Fuse MINI . RR DEFOG. Rear Window Defogger, Heated Mirrors.Where is the fuel pump relay on my 1998 gmc sierra 4wdFord fuel pump relay wiring diagram Fuel pump relay wiring diagram gm truckFuel pump relay location needed: truck ran okay, went out next. Ford Fuel Pump Relay Wiring Diagram - Wiring Diagram. Check Details. Relays wiring needed

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GMC > 2004 > SIERRA 1500 > 5.3L V8 > Electrical-Switch & Relay > Fuel Pump / Circuit Opening Relay. Price: Alternate: No parts for vehicles in selected markets. ... Fits Fuel Pump Relay or 4 TERM; GAS Engine. ULTRA-POWER 1R1056. $3.38: $0.00 + Sold in packs of 1 x 1: $3.38: Alternate: Quantity: Add to Cart. STANDARD MOTOR PRODUCTS ...If there are no reference pulses, the PCM turns the fuel pump OFF after about 2-3 seconds. The pump delivers fuel to the fuel rail and injectors, then to the pressure regulator, where the system pressure remains at 379-427 kPa (55-62 psi) while the fuel pump is running. Excess fuel returns to the fuel tank.On average, the cost for a GMC Sierra 2500 HD Fuel Pump Relay Replacement is $100 with $5 for parts and $95 for labor. Prices may vary depending on your location. Car Service Estimate Shop/Dealer Price; 2017 GMC Sierra 2500 HD V8-6.0L: Service type Fuel Pump Relay Replacement:2005 w3500 6.0 fuel pump relay and fuse location where is fuel pump relay and fuse - GMC W3500 question. Search Fixya. Browse Categories Answer Questions . GMC W3500 Car and Truck; GMC Car and Truck ... Where is the flasher relay. GMC W3500 Cars & Trucks. Isuzu npr 5.7 gas not starting on its own. 2001 GMC W3500. What is the wheel torque.The 2011 GMC Sierra has 3 different fuse boxes: Instrument Panel Fuse Block diagram. ... Secondary Fuel Pump (Ignition) Fuse FMX/JCase . 57. Cooling Fan 1. Fuse FMX/JCase . 58. Not Used. ... Relay . FAN HI. Cooling Fan High Speed. Relay . FAN LO. Cooling Fan Low Speed. Relay . FAN CNTRL. Cooling Fan Control.2002 GMC Sierra fuse box diagram. The 2002 GMC Sierra has 3 different fuse boxes: ... Fuel Pump (Relay) Fuse MINI . 02 A. Oxygen Sensors [Gasoline Engine] Fuse MINI . 02 B. Oxygen Sensors [Gasoline Engine] Fuse MINI . LR PRK. Left Rear Parking Lamps. Fuse MINI . RR DEFOG. Rear Window Defogger, Heated Mirrors.GMC Sierra mk1 (1996 - 1998) Fuse Box Diagram. Jonathan Yarden Mar 25, ... The underhood fuse/relay center is located in the rear of the engine compartment near the brake fluid reservoir. Name: Usage: ECM-B: Fuel Pump, PCM/VCM: RR DEFOG: Rear Window Defogger: IGN-E: Auxiliary Fan Relay Coil, A/C Compressor Relay, Hot Fuel Module, Dual Tanks: HORN:gmc sierra 1500 fuel pump relay location 2 Answers. where is the fuel pump relay on a 2008 sierra 1500 c/cab 4x4. 2008 GMC Sierra 1500-Maintenance & Repair.So far all of the info I've found in the manuals is kind of vague but if you pull it and the truck won't run, so it's kind of important, whatever it does. 07 GMC Sierra Classic (LBZ) Duramax Dually Crewcab 4X4, FASS Titanium 95, Ohio Diesel Parts Tank Sump, bypass engine oil filter, synthetic lubes; 84 Chevy 6.2L 1.25 Ton (Army CUCV) with Banks ...Tank & mounting. 6.0L. Fuel components 6.6L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors. MSRP $7.20. $4.57. Add to Cart. 7. Fuel Pump Module without Fuel Level Sensor, with Seal. 13510918. ….

Duralast Relay 19265. $1999. Part # 19265. SKU # 221854. Limited-Lifetime Warranty. Checkif this fits your GMC C6500 Topkick. Select store for pickup availability. StandardDelivery by May 02. Add TO CART.5.3L GMC Sierra: 1999, 2000. This typical circuit diagram includes the following circuits: fuel pump relay and fuel pump. You can find the fuel pump test procedure here: How To Test The Fuel Pump (1999-2006 V8 Chevrolet Silverado, GMC Sierra). More Chevrolet Silverado (GMC Sierra) Tutorials. You can find a complete list of V8 Chevrolet ...Gozzie2009 Silverado Extended Cab 4x45.3L flex fuel 4 Speed. From setting overnight, just cold starts, both remote and manual starts, after started, idles and runs normally and drives fine with no engine codes at any time. do this, cold overnight start. Turn key on wait at least 5 long seconds then start.Fuel Pump Wiring Diagram 12022 2002 4 8l 5 3l Silverado Sierra. Fuel Pump Wiring If You Disconnect The While Battery. 2000 Gmc Sierra 1500 Fuel Pump Wiring Harness Delphi Fa10003. Fuel Pump Wiring The 1947 Present Chevrolet Gmc Truck Message Board Network. Avalanche Sierra Silverado C K Series 12022 2005 Power …Start somewhere, like say, the fuse box, make sure there is 12.x V there, then follow the wire to it's next connector and test the voltage there, repeat until you get to the fuel pump or you get less than 12.x V. 2004 Sierra 3500 dually, 6.0L extended cab, cab&chassis flatbed, upgraded to 4wd.Make sure you click the THANKS button under the video screen if this video helped you or "saved your life." No matter what monetized channel it is!This is a ...I need the location of the fuel pump relay for a 1992 GMC Topkick/kodiak gas 366 motor fuel pump relay location - GMC K1500 question. Search Fixya. Browse Categories ... 1993 GMC Sierra K1500. Firing order for 1999 GMC. GMC K1500 Cars & Trucks. Lights will not turn on. 1986 GMC K1500. 6.5 Diesel Thermostat Housing Bolt.Ratchet with metric and standard sockets. Wheel chocks. Most fuel pump relays are located in the engine compartment inside the fuse box. Step 1: Turn on the ignition key to run. Listen for the fuel pump to actuate. Also, listen to the fuel pump relay for any buzzing or clicking noise. Step 2: Start the engine.on opposite side of fuel pump relay .there the relay and fusible link then at the end there is a small block it contains the fuse 20 amp. 1111 Answers. Posted on Aug 24, 2009. SOURCE: 1995 GMC Sierra 5.7 liter stalls and is hard.Hybrid Auxiliary Engine Compartment Fuse Block. The fuse block is located in the engine compartment near the front of the vehicle. Fuse box diagram (fuse layout), location and assignment of fuses and relays Chevrolet Silverado, GMC Sierra 1500, 2500HD, 3500HD (2007-2013). Gmc sierra fuel pump relay location, DMAIR. MEMBER. 1998 GMC SIERRA. V8. 4WD. AUTOMATIC. 200,000 MILES. I have to remove the fuel pump relay and bypass it to get the fuel pump running. Once the truck starts I can replace the relay and drive., In this video we will show you what is required to remove the fuel pump in your 2007 to 2014 GMC Sierra. This process should also be similar to Silverados, ..., My 2012 Equinox, 2.4l, has a fuel pump module located in the rear. The main power fuse for the module is #52 under the hood. Remove the fuse and start the car and let run until it stops. Pressure will be relieved in the low and high side. If changing injectors make sure you get the full gasket, hardware and seal kit from AC Delco., Doing a repair or project?? Want to be part of a Friend's Edition Episode? Interested Subscribers should contact Rob at [email protected] Absolutely NO-E..., A diesel fuel lift pump is a lift pump that transfers fuel from the tank to the fuel injection system. Because in modern vehicles the tank is located below the engine, the fuel has..., Chevy Mechanic: Wrenchtech. The priming is done through the relay using the same power supply from the ECM-B fuse but the trigger voltage for the relay is supplied by the PCM on the green and white wire. Without a relay you would have long cranking and hard starts when cold. They are redundent circuits though., Relay - Fuel Pump 1991 GMC Truck S15 Jimmy 2WD 4.3L TBI 6cyl The Relay - Fuel Pump Under hood, driver side, upper firewall, mounted in relay block Read full answer ... Location for fuel pump relay on 99 gmc safari van. 1992 GMC Safari; Open Questions: 0 answers. Whats the cost of road tax in the uk., 3 Answers. The fuel pump itself is inside the fuel tank but you can get to it and remove it from the top of the tank. Get under the truck and look for the exact location of the tank. It will be necessary to cut the access panel on the floor of the bed. Please, be very careful when using and cutting instruments, a spark can create a disaster ..., GMC SIERRA. The fuel pump relay on our 96 GMC Sierra 4x4, 350, 5.0L, had been loosing contact. We tightened up the fuse box but that didn't work. We could get it working if we wiggled the switch or pushed it down hard. Then all of a sudden nothing would work, we removed the fuse box, to expose the wires and found that there is a RED wire in the ..., 10 Answers. SOURCE: fuel pump fuse located on 1997 gmc sierra. The fuse is actually a Relay Switch and its located in the Fuse Relay Center on the driverside of the engine compartment. The Black Box is labled Fuse Relay Center, the diagram on the cap displays which Relay is the Fuel Pump relay...the Relay switch is usually $8-$15 depending on ..., It’s the Engine Control Moule (ECM). When the fuel pump relay doesn’t get power from the ECM, the fuel pump cannot supply fuel to the engine and the car won’t start. 1. Loose Connections. The fuel pump relay not engaging issue is often caused by loose connections in your car. If the fuel pump relay itself is loose or one of its battery ..., http//video.advanceautoparts.com/?v=23248 watch this video featuring products available on AdvanceAutoParts.com., The fuel pump fuse gets its power from the fuel pump relay, which is located in the Instrument Panel Junction Block. The fuel pump relay gets its ground from G102, which is located just forward of the left strut tower. The fuel pump relay gets its power from the Powertrain Control Module Connector "C" Pin 10 ( DARK GREEN/ WHITE wire) for the primary side of the relay., Where is the fuel pump relay located on a 2008 GMC Sierra EXT cab 4x4 with a 4.8 liter engine? Submitted: 12 years ago. Category: GM. Show More. Show Less. Ask Your Own GM Question. Share this conversation. Answered in 5 minutes by: 2/12/2012., It's understandable that your dad can't remember where the fuel pump relay is, because on the 1994 GMC Jimmy, it's in somewhat of an unusual spot— underneath a panel on the left side of the glovebox. The fuel pump relay is usually found in three common locations. If you're ever searching it out on another car, check these spots: When ..., 1988 GMC 1500 fuel pump relay location - Cars & Trucks. Posted by Anonymous on Jan 07, 2012. SOURCE: 1997 gmc jimmy fuel pump relay location. I believe it's the middle relay in the glove box. You should feel the relay click on when you turn the key's, but you only have 2 seconds. SOURCE: Location of fuel line and fuel pump on a 1988 Subaru ..., 2007-2014 GMC Sierra HD Cab Chassis 2007-2009, 2014 GMC Sierra HD ... Fuel Pump Flow Control Module Replacement (Full Size Utilities) ... Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor Vehicle Safety Act. For owners outside these areas, dealers should notify, Where is the fuel pump relay located on a 2001 GMC Sierra? The fuel pump relay on a 92 gmc 1500 is located on the passenger side of the firewall behind a black plastic cover., Fuse diagram gmc sierra 1500 box location relay fuel pump silverado chevy wiring 2007 2500 trailer duramax 2004 2008 2010 Genuine oem replacement for 1999-2003 gmc sierra 1500 fuel pump module Sierra gmc pump fuel 2000 1500. 2000 GMC Sierra Fuel Pump Assembly 1500 Series - Base Models - 5.3L., Diesel fuel prices keep breaking records this week but no one is celebrating. On May 6, the average cost for a gallon of diesel fuel in America is $5.51. In many locations, it's co..., SOURCE: fuel pump relay for a 1994 Chevy Truck WT1500. The Fuel Pump Relay is located in the Glove Box under a little cover on the upper left side. The Fuel Control Relay is the left relay and The Fuel Pump Relay is the right. To test these relays, swap them and then try to start the vehicle, or blow the horn., Car trouble always seems to happen at the most inconvenient times, usually when you are already running late or on your way to an extremely important commitment. Turning your key t..., The fuse block access door is on the driver's side edge of the instrument panel. Pull off the cover to access the fuse block. GMC Sierra mk1 - fuse box - instrument panel. Position. Name. Usage. 1. STOP/HAZ. Stop/TCC Switch, Buzzer, CHMSL, Hazard Lamps, Stoplamps., http//video.advanceautoparts.com/?v=23248 watch this video featuring products available on AdvanceAutoParts.com., Mark helpful. 80. Funnel428 answered 5 years ago. Ck under the flasher under the dash. Also pop open the fuse and relay box under the hood. Should say on …, gmc sierra 1500 fuel pump relay location 2 Answers. where is the fuel pump relay on a 2008 sierra 1500 c/cab 4x4. 2008 GMC Sierra 1500-Maintenance & Repair., 1991 Topkick 366 fuel pump relay. For the life of me I cannot find the fuel pump relay. I had seen somewhere that it is supposed to be on a cross member in front of the drivers side fuel tank. I dont have a drivers side fuel tank and there is no relay on any cross member under the truck. It is not on the firewall where I thought that it would be., About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., GMC Sierra mk1 (2005) – fuse box diagram. Year of production: 2005. ... Powertrain Control Module, Fuel Pump: F/PMP: Fuel Pump (Relay) B/U LP: Back-up Lamps, Automatic Transmission Shift …, 18259 posts · Joined 2008. #5 · Jul 14, 2014. The Duramax does NOT have a factory fuel pump. It shows a relay because GM uses the same fuse box for the gas engine trucks. The Duramax uses the injection pump- [CP3] to draw fuel through all the lines, and fuel filter, so a small leak can allow air. The CP3 [mechanical] does not use a …, Fuel Pump (Relay) O2 A: Oxygen Sensors: FUEL HT: Fuel Heater, Glow Plug and Intake Heater Controls: O2 B: Oxygen Sensors: LR PRK: Left Rear Parking Lamps: RR DEFOG: Rear Window Defogger, Heated Mirors: HDLP: Headlamps (Relay) TRL PRK: Parking Lamps Trailer Wiring: RT HDLP: Right Headlamps: DRL: Daytime Running Lamps (Relay) HTD MIR: Heated ..., 1 post · Joined 2014. #1 · Sep 11, 2014. Hello, Recently came out to a completely drained battery. After charging and restarting the truck, then shutting it off, I heard the pump running continuously. Could not get it to shut off so I disconnected the battery. There is no fuel pump relay so I'm thinking the problem might be with the Fuel Pump ..., If you’re in the market for a new full-size pickup truck, the 2022 GMC Sierra 1500 is likely an option you’ll come across during your search. And it’s certainly a truck model you s...