Fuel Pump Module - ACDelco (MU1789)

ACDelcoMPNMU1789
Sale Price$299.14
Description : GM Genuine Parts Fuel Pump Module Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These module assemblies help deliver fuel to your vehicle's fuel injectors, providing a steady, reliable fuel supply to your vehicle's engine. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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Product Details

Description

GM Genuine Parts Fuel Pump Module Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These module assemblies help deliver fuel to your vehicle's fuel injectors, providing a steady, reliable fuel supply to your vehicle's engine. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Part Number (MPN)
MU1789
Brand
SKU
MU1789
UPC / GTIN
193468087925 / 00193468087925
Condition
New
Other Names
19369980
Brand
GM Genuine Parts
Connector Color
White
Connector Gender
Female
Connector Shape
Oval
FAQ - Answer 1
Yes. Refer to a parts catalog for specific applications.
FAQ - Answer 2
Yes. GM Original Equipment fuel pumps have gone through the same rigorous testing and meet the specifications of the production pump your vehicle was built with.
FAQ - Answer 3
No. Noise, exhaust smoke, warning lights, hard starting, stalling, and hesitation can all be signs of a failing fuel pump. However, it is also possible that none of these signs could be present.
FAQ - Answer 4
Yes. Inspecting fuel pressure and/or examining engine data and codes with a scan tool can help determine potential concerns.
FAQ - Answer 5
Yes. It is good practice to refuel with high quality fuel from well known, high volume, trusted fuel stations whenever possible.
FAQ - Answer 6
Yes. Special tools may be required, e.g., a wire connector crimper, fuel pressure gauge, and lock ring removal tool.
FAQ - Question 1
Do I need to buy a specific version of this pump to fit my particular vehicle?
FAQ - Question 2
Are there benefits to replacing my fuel pump with a GM Original Equipment fuel pump?
FAQ - Question 3
Will my fuel pump always exhibit warning signs if it is failing?
FAQ - Question 4
Are there ways to test my fuel pump to see if it is performing efficiently?
FAQ - Question 5
Are there preventative measures I can take to help prevent/minimize fuel contamination that could damage my fuel pump?
FAQ - Question 6
Could special tools be required for fuel pump installation?
Features & Benefits - Bullet 1
Helps provide a reliable fuel supply to your vehicle's engine
Features & Benefits - Bullet 2
Electrical connections are designed to help eliminate high resistance due to vehicle vibration
Features & Benefits - Bullet 3
Designed to optimize pump life and reduce fuel pump noise
Features & Benefits - Bullet 4
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
Features & Benefits - Bullet 5
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
Features & Benefits - Bullet 6
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Features & Benefits - Bullet 7
GM regularly updates production and service part designs to integrate new materials and technologies
Fuel Filter Included
No
Fuel Sending Unit Included
Yes
Fuel Tank Pressure Sensor Included
Yes
Fuel Type
Gas
Gasket Or Seal Included
Yes
Gasket Or Seal Material
Rubber
Good Maintenance Practices - Section 1 - Bullet 1
Fuel contamination is one of the top reasons for fuel pump failure. For proper operation and longevity, it is critical to have a clean fuel system.
Good Maintenance Practices - Section 1 - Bullet 2
When servicing a fuel pump, always replace the strainer, and inspect the inline fuel filter for contamination (if equipped).
Good Maintenance Practices - Section 1 - Bullet 3
Before replacing a fuel pump, check for proper electrical connections, pressure, and volume.
Good Maintenance Practices - Section 1 - Bullet 4
Make a service appointment if your vehicle shows any of the following symptoms: 'Service Engine Soon' light is illuminated, improper engine idling, hesitation, or stalling, excessive exhaust smoke, abnormal engine noises, or noticeable fuel odors.
Good Maintenance Practices - Section 1 - Bullet 5
Refer to your Vehicle Owner's manual for additional vehicle maintenance practices.
Height
0.8
Housing Material
Plastic
In Tank or External
In Tank
Length
6.85
Lock Ring Included
No
Mounting Hardware Included
No
Negative Ground
Yes
Outlet Quantity
1
Outlet Type
Quick Connect
Pump Type
Electric
Signs of Wear & Troubleshooting - Section 1 - Bullet 1
Excessive noise
Signs of Wear & Troubleshooting - Section 1 - Bullet 2
Fuel gauge reading incorrectly
Terminal Gender
Male
Terminal Quantity
4
Terminal Type
Blade
Voltage
12
Weight (lb)
0.04
Width
10.2
Wire Harness Included
Yes
Wire Quantity
4

YearMakeModelBody & TrimEngine & Transmission
Vehicle #1
Year
Make
Model
Body & Trim
Engine & Transmission

BrandEquivalent Part Numbers

Rows per page:

0-0 of 0

BrandEquivalent Part Numbers
1-800-Radiator
2920317
ACDelco
MU1534, MU1790, MU184, MU216, MU233
Agility Fuel Solutions
4010172
Airtex
E3974M
Airtex Fuel Pumps
E3974M
AutoZone
DFG0118
Bosch
67314, 67370, 67403, 67404

Shipping Policy

Shipping Policy

Operated by RevolutionParts Inc · Effective date: 11/2025 · Last updated: 4/2026

1. How We Fulfill Orders

PartsDirect.parts is operated by RevolutionParts Inc and fulfills all orders through a network of authorized wholesale distribution partners, including PartsAuthority, The Parts House, and Rough Country. These partners are licensed to supply the brands they carry and ship directly to you — allowing us to offer a wide selection with fast availability.

We do not maintain our own warehouse. Orders route to the distribution partner that stocks the item closest to your location.


2. Shipping Timeline

Your total delivery time consists of two separate stages: processing time and transit time.

Stage Timeframe Notes
Order Processing 1–2 business days In-stock items. Orders placed after 12:00 PM EST or on weekends or holidays process the next business day.
Special / Distributor Orders 2–3 business days to process Items fulfilled from a specific distribution partner. Processing begins the next business day.
Ground Transit 2–7 business days Varies by destination. Remote locations (AK, HI) may take additional time.
Estimated Total Delivery 3–10 business days Processing + transit combined. Overnight options available at additional cost.
Note: Processing time and transit time are separate. "Processing" is the time for your order to leave our distribution partner's facility. "Transit" is the carrier's delivery time to your address. These cannot be combined into a single arrival estimate.

3. Shipping Costs

Shipping costs are calculated by the carrier based on the weight, dimensions, and destination of your order. The exact cost will be displayed at checkout before you complete your purchase — there are no surprise charges after ordering.

Free Shipping

Orders for Rough Country products qualify for free standard shipping. Free shipping eligibility is noted on applicable product pages.

Oversized Items

Certain oversized or heavy items (such as lift kits, truck bed covers, and large suspension components) may incur additional shipping charges. You will be contacted for approval before shipment if additional charges apply.


4. Shipping Carriers & Processing Cutoff

We ship via UPS, FedEx, and USPS. We reserve the right to substitute carriers when necessary to reduce shipping costs or improve delivery speed.

Order Processing Cutoff: Orders placed before 12:00 PM EST on business days are processed the same day. Orders placed after this time, or on weekends and holidays, begin processing the next business day.

A tracking number will be emailed to you when each shipment leaves our distribution partner's facility. You can use this number to track your delivery directly on the carrier's website.

Standard ground shipments are delivered Monday through Saturday in most areas. Sunday delivery is not available.


5. Split Shipments

If your order contains products from multiple brands, your items may ship from different distribution partners and arrive on different days.

You will receive a separate tracking number for each shipment. Receiving one package before another is completely normal and does not mean your order is incomplete or lost. If you do not receive all items within the estimated delivery window, contact us at [email protected].


6. Where We Ship

  • We ship to all 50 U.S. states, including Alaska and Hawaii. Additional transit time may apply for AK and HI.
  • We do not ship internationally at this time.
  • We do not accept COD (Cash on Delivery) orders.

7. Damaged in Transit

If your order arrives visibly damaged:

  1. Refuse delivery if possible and note the damage with the carrier at the time of delivery.
  2. Contact the carrier directly to file a damage claim. Retain all original packaging — the carrier may need to inspect it.
  3. If damage is discovered after delivery, contact the carrier within 48 hours.
  4. You may also contact us at [email protected] or (602) 654-0207 and we will assist where possible.

Please note: Damage claims are processed by the shipping carrier, not by PartsDirect.parts. Retaining all original packaging is essential to support a successful claim.


8. Backordered or Discontinued Parts

If a part is backordered or discontinued, we will contact you by email or phone to advise on alternatives or estimated availability. You will have the option to wait, substitute, or cancel at no charge.


9. Overnight Shipping

Overnight shipping is available for an additional cost where offered by the carrier for your destination. Please note that overnight shipping applies to transit time only — it does not reduce order processing time. An order placed after business hours on a Friday with overnight shipping selected will not depart until the next business day.


Contact Us — Shipping Questions

PartsDirect.parts — Shipping Support Operated by RevolutionParts Inc
58 S. River Dr, Suite 101, Tempe, AZ 85288
📞 (602) 654-0207
✉️ [email protected]
🕐 Monday–Friday, 9am–5pm EST · Response within 24–48 hours
Check out our Shipping Policy for more details.

Return Policy

Returns & Refund Policy

1. Overview

At PartsDirect.parts, operated by RevolutionParts Inc, we want you to be completely satisfied with your purchase. This policy outlines how to cancel orders, initiate returns, and receive refunds. Please read it carefully before completing your purchase.

Return Window

  • 30 days from date of receipt
  • Item must be uninstalled and unused
  • Original packaging required
  • Original invoice must be included

Refund Details

  • Processed within 4–5 business days of receipt
  • Issued to original payment method only
  • No store credit offered
  • Original shipping non-refundable (unless our error)

Return Shipping

  • Customer pays return shipping
  • No prepaid labels provided
  • We recommend using a trackable carrier

Restocking Fee

  • 15% on standard returns
  • No restocking fee on defective items
  • No restocking fee on incorrect items sent by us
  • No cancellation fee — see Section 2

2. Order Cancellations

You may cancel your order at any time before it has shipped at no charge.

To cancel, contact us immediately with your order number:

Once an order has shipped, it cannot be cancelled. If your order has already shipped, please follow the return process in Section 3 below.

There is no cancellation fee for orders cancelled before shipment, regardless of whether the item is in stock or on order from a distribution partner.


3. How to Initiate a Return

Returns must be requested within 30 days of receiving your order. To start a return:

  1. Visit partsdirect.parts/account/order-status
  2. Locate your completed order and click "Return Item"
  3. Complete the return request form — you will receive return instructions by email
  4. Pack the item in its original packaging with a copy of your original invoice
  5. Ship the item back using a trackable carrier at your expense
  6. Once we receive and inspect the return, your refund will be processed within 4–5 business days

You may also contact us directly to initiate a return: [email protected] or (602) 654-0207.


4. Return Eligibility

To qualify for a return, items must meet all of the following conditions:

  • Returned within 30 days of receipt
  • Uninstalled and unused
  • In original packaging
  • Accompanied by a copy of the original invoice

Items we cannot accept for return

  • Installed or used parts
  • Electrical parts (once opened)
  • Items returned without original packaging
  • Items returned outside the 30-day window
  • Items not in resalable condition

We reserve the right to refuse any return that does not meet the criteria above. If a return is refused, we will notify you and return the item to you.


5. Defective, Incorrect, or Damaged Items

Items that arrive defective, incorrect, or damaged through no fault of your own are exempt from the 15% restocking fee.

Defective items

If your part arrives defective, contact us within 48 hours of delivery with photos of the defect and your order number. We will advise on the return or replacement process. Note that warranty claims beyond the return window are handled directly with the manufacturer — see Section 7.

Incorrect items (our error)

If we shipped the wrong item, contact us within 48 hours. We will provide a replacement at no additional cost and cover return shipping for the incorrect item.

Damaged in transit

If your order arrives damaged, please contact the shipping carrier directly to file a damage claim. Retain all original packaging — the carrier may require it for inspection. You may also contact us and we will assist where possible. See our Shipping Policy for full details on damaged freight.


6. Refunds

Refund timing

Once we receive and inspect your returned item, your refund will be processed within 4–5 business days. All refunds are issued within 30 days maximum. You will receive a confirmation email when the refund is issued.

Refund method

Refunds are issued to the original payment method only. We do not offer store credit, gift cards, or refunds to alternative payment methods.

Refund amount

  • Item price minus the 15% restocking fee (for standard customer remorse returns)
  • Full item price for defective items or items incorrectly shipped by us
  • Original shipping charges are non-refundable, except where the return is due to our error

7. Warranty Claims

All parts sold through PartsDirect.parts are covered by their respective manufacturer's warranty. PartsDirect.parts does not offer an independent product warranty.

For warranty claims beyond our 30-day return window, contact the manufacturer directly. If you need help identifying the correct manufacturer contact, reach us at [email protected].

For full warranty details, see our Warranty Policy.


Contact Us — Returns & Refunds

PartsDirect.parts — Returns Support Operated by RevolutionParts Inc
58 S. River Dr, Suite 101, Tempe, AZ 85288
📞 (602) 654-0207
✉️ [email protected]
🕐 Monday–Friday, 9am–5pm EST · Response within 24–48 hours
Check out our Return Policy for more details.