GMC R3500 Fuel Pump Replacement Costs

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Fuel Pump Replacement Service

How much does a Fuel Pump Replacement cost?

On average, the cost for a GMC R3500 Fuel Pump Replacement is $371 with $70 for parts and $301 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1990 GMC R3500V8-7.4L	Service typeFuel Pump Replacement	Estimate$707.79	Shop/Dealer Price$759.96 - $887.70
1990 GMC R3500V8-5.7L	Service typeFuel Pump Replacement	Estimate$675.80	Shop/Dealer Price$721.70 - $844.74
1991 GMC R3500V8-6.2L Diesel	Service typeFuel Pump Replacement	Estimate$650.22	Shop/Dealer Price$738.30 - $993.55
1990 GMC R3500V8-6.2L Diesel	Service typeFuel Pump Replacement	Estimate$650.22	Shop/Dealer Price$738.30 - $993.55
1991 GMC R3500V8-7.4L	Service typeFuel Pump Replacement	Estimate$675.80	Shop/Dealer Price$727.02 - $854.04
1991 GMC R3500V8-5.7L	Service typeFuel Pump Replacement	Estimate$675.80	Shop/Dealer Price$722.28 - $845.76

Show example GMC R3500 Fuel Pump Replacement prices

What is the fuel pump and how does it work?

The fuel pump supplies pressurized gasoline to each of the fuel injectors in a car’s engine. The fuel pump is powered by a compact electric motor and is located in the vehicle’s gas tank. The pressure and output of the pump are controlled by a regulator. Filtration of the fuel occurs either in the fuel tank using a pickup screen or externally with a replaceable filter mounted in the fuel supply line.

When to consider replacing the fuel pump?

A high quality, OEM fuel pump can last indefinitely. However, as with any electro-mechanical component, a fuel pump will eventually degrade and fail. If it fails to produce adequate pressure or completely quits operating, it will need to be replaced. This failed condition can sometimes be preceded or accompanied by one or more of the following symptoms:

Car won’t start or unexpectedly stalls and won’t re-start. A failed fuel pump may prevent a car from starting or stall it.
Check engine light is on. Sometimes a fuel pump will fail slowly, and that means the fuel pressure and volume slowly degrades. The lack of fuel may result in the engine operating without enough fuel relative to the amount of air, causing the check engine light to appear.
Whirring noise from fuel tank. As a fuel pump fails, you may notice a whirring or humming noise coming from the fuel tank area, toward the rear of the car. If the noise is from the fuel pump, failure of the pump is often imminent and you should replace the fuel pump at your earliest convenience.

How do mechanics replace the fuel pump?

The fuel pump is tested to be sure it isn’t functioning.
Should the fuel pump be faulty, it is removed from the tank through an access panel above the tank in the passenger compartment.
When no access panel exists, fuel is first drained from the tank and then the fuel tank must be lowered from the vehicle to gain access to the pump.
In all cases, fuel pump supply and return hoses, as well as EVAP system hoses, and electrical connections to the pump must be removed.
Once the pump is out, any reusable brackets and pick up screens are attached to the new pump, then the new pump is installed.
If the fuel system uses an in-line external filter, a filter is often replaced. All hoses and electrical connections are re-established.
Fuel is added to the tank and the engine is run to test for leaks.

Is it safe to drive with a fuel pump problem?

Usually, it’s still safe to drive, but the pump may lead to an overheated engine and catalytic converter. Complete fuel pump failure can leave you stranded out on the road, but many times a car won’t start before initially driving.

However, if the fuel pump problem involves leaks of gasoline or vapors, it is unsafe to continue driving, and should immediately be checked by a qualified mechanic.

When replacing the fuel pump keep in mind:

Prior to replacing, the mechanic will power the fuel pump directly to confirm that the issue is a failed pump versus a faulty power supply to the pump.
Unless the fuel filter was replaced recently, whenever the fuel pump is replaced a new fuel filter should be installed.
When failing earlier than expected, the power supply should be verified because a voltage drop in the fuel pump circuit can lead to overheating.
Should the fuel tank be lowered during the repair, the fuel tank straps and fasteners should be checked for excessive corrosion and replaced as needed.
The fuel in the gas tank cools and lubricates the fuel pump. After installation of a new fuel pump, it’s wise to keep the gas tank at least a quarter full to maximize the life of a new fuel pump.

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Tomas

18 years of experience

226 reviews

Tomas

18 years of experience

by Shaun

GMC R3500 V8-5.7L - Brake System Inspection - Newark, New Jersey

Pretty good. My inspection for my brakes went very quick, (a little too quick.) Not the most thorough inspection. However, Tomas came to the same conclusion that I had already suspected and the problem is now "dually" analyzed. 15 minutes, and I'm good. Tomas was quite knowledgeable and polite. He came with the proper tools and equipment to say the least and was promptly on time for the booked appointment. I would consider requesting Tomas again for similar work. Thanks again to Tomas and the team at YourMechanic for helping out.

Terry

31 years of experience

223 reviews

Terry

31 years of experience

by Jay

GMC C1500 V6-4.3L - Fuel Pump - Phoenix, Arizona

Terry was very helpful and got the problem fixed! His recommendations for future work were also very helpful. We will be scheduling work in the future to fix the other small issues.

Augie

32 years of experience

263 reviews

Augie

32 years of experience

by mark

GMC C1500 V8-5.7L - Fuel Pump - Palmdale, California

changed the fuel pump in my 1998 GMC P/U good job I'm happy and cleaned up after the job was done

Colby

15 years of experience

66 reviews

Colby

15 years of experience

by Timothy

GMC Sierra 1500 V8-5.3L - Fuel Pump - Denver, Colorado

Replaced my fuel pump thanks colby!

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