18 Electrical parts are listed for the 2004 Hummer H1, in 4 part types, covering the 6.5L V8 DIESEL Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2004 Hummer H1, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. Most of the listed parts are Alternator / Generator (10 parts), Speed Sensor (4 parts) and Starter Motor (3 parts). The other 1 part type covers the remaining 1 part.
Every part on this page is matched to the 6.5L V8 DIESEL Turbocharged — the only engine offered in the 2004 Hummer H1.
The most listed brands for 2004 Hummer H1 electrical parts are TERREPOWER (3 parts), WAI GLOBAL (2 parts) and PURE ENERGY (2 parts), plus 8 more brands. Quality grades include Remanufactured, New and Standard Replacement.
2 parts on this 2004 Hummer H1 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including WAI GLOBAL 8219N (Alternator / Generator) and WAI GLOBAL 8219R (Alternator / Generator). Click any part number to see every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Popular | 8219N | 🇺🇸 US 🇨🇦 CA | with Standard EquipmentCS144 Series | View on Amazon |
| BOSCH | AL8577N | 🇺🇸 US 🇨🇦 CA | Standard124 Amps | View on Amazon |
| PURE ENERGY | 8219604N | 🇺🇸 US 🇨🇦 CA | 140 Amps | View on Amazon |
| TERREPOWER | N82195 | 🇺🇸 US 🇨🇦 CA | 140 Amps | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Popular | 8219R | 🇺🇸 US 🇨🇦 CA | Power Select Reman | View on Amazon |
| ACDELCO | 3342452A | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| FVP | 8203604 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY | 8203604 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 21095 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 82035 | 🇺🇸 US 🇨🇦 CA | RemanufacturedSquare connector | View on Amazon |
This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator.
10 Alternator / Generator parts are listed for the 2004 Hummer H1, from WAI GLOBAL, PURE ENERGY, TERREPOWER and 4 other brands. WAI GLOBAL 8219N carries the "Popular" badge.
In the New grade, WAI GLOBAL, BOSCH, PURE ENERGY and 1 other brand supply 4 parts: brand-new units rather than rebuilt ones. A representative part number is WAI GLOBAL 8219N.
In the Remanufactured grade, WAI GLOBAL, ACDELCO, FVP and 3 other brands supply 6 parts: factory-rebuilt units with new wear components. A representative part number is WAI GLOBAL 8219R.
Battery Terminal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA | 00351 | 🇺🇸 US 🇨🇦 CA | Universal Terminal for side terminal batteries | View on Amazon |
This table covers the terminals and clamps that connect cables to the battery posts.
This group shows a single part: DEKA 00351.
Speed Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP | JE18 | 🇺🇸 US 🇨🇦 CA | Transmission SpeedAutomatic Trans. | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PIONEER | 771091 | 🇺🇸 US 🇨🇦 CA | Fits Transmission SpeedInput | View on Amazon |
| PIONEER | 771092 | 🇺🇸 US 🇨🇦 CA | Transmission SpeedAutomatic Trans. | View on Amazon |
| ROSTRA | 501007 | 🇺🇸 US 🇨🇦 CA | Fits Transmission SpeedInput | View on Amazon |
This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor.
4 Speed Sensor parts for the 2004 Hummer H1 come from 3 brands — PIONEER, ATP and ROSTRA.
The Economy section lists 1 option from ATP — the catalog's value-priced group. ATP JE18 is listed in this group.
In the Standard Replacement grade, PIONEER and ROSTRA supply 3 parts: built to original-equipment specification. A representative part number is PIONEER 771091.
Part numbers include ATP JE18, PIONEER 771091 and PIONEER 771092, among others listed above.
Starter Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | 6608S | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 26041 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 6608 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
3 Starter Motor parts are listed for the 2004 Hummer H1, from FVP, REMY and TERREPOWER.
Part numbers include FVP 6608S, REMY 26041 and TERREPOWER 6608.
Buying Electrical Parts for a 2004 Hummer H1
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Confirm you have the 6.5L V8 DIESEL Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Alternator / Generator and Speed Sensor .
Frequently Asked Questions
How many electrical parts fit the 2004 Hummer H1?
Our catalog currently lists 18 electrical parts for the 2004 Hummer H1 across 4 subcategories and 11 brands, covering the 6.5L V8 DIESEL Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 2004 Hummer H1?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, clean or renew the battery terminals and grounds with any charging-system repair.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2004 Hummer H1 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2004 Hummer H1?
Every part on this page is matched to the 6.5L V8 DIESEL Turbocharged engine. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2004 Hummer H1
Electrical Parts for Other Hummer H1 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.