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20 Best 03 Gmc Sierra Alternator of 2023 – Romance University
After hours researching and comparing all models on the market, Romance University finds out the Best 03 Gmc Sierra Alternator of 2023. Check our ranking below.
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- All components are 100% New to provide improved performance
- Key components are greased to ensure long term reliability in harsh conditions
- New units are manufactured under the guidelines of ISO Quality Standards to ensure consistent quality
- ACDelco Professional New Alternators are computer tested for voltage stability, terminal function, and electronic circuit board integrity
- Engineering enhancements to internal components provide the latest, most efficient unit for your vehicle
- [Vehicle Fitment]: Compatible with Cadillac Escalade 2002-2004, Escalade ESV/EXT 2003-2004; Compatible with Chevrolet Avalanche 1500/2500 2002-2004, C3500HD 2001-2002 Astro/Express 1500/2500/3500 2001-2004, Silverado 1500 HD 2001-2003, Silverado1500/2500 1999-2004, Silverado 2500 HD/3500 2003-2005, Suburban 1500/Tahoe 2000-2004, Suburban 2500 2000-2005
- [Vehicle Fitment]: Compatible with GMC C3500HD 2001-2002, Safari/Savana 1500/2500/3500 2001-2004, Sierra 1500/2500 1999-2004, Sierra 1500 HD 2001-2003, Sierra 2500 1999-2002, Sierra 2500 HD/3500 2001-2005, Yukon/Yukon XL 1500 2000-2002, Yukon XL 2500 2000-2005
- [Specifications]: ① Voltage: 12V; ② Amperage: 105A; ③ Rotation: CW (Clockwise); ④ Number of Grooves: 6-Groove Pulley; ⑤ Condition: New
- [Reference Number]: 8247N, 8247, 112850, 10480388, 10464438, 19244727, 8273, 8291
- [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted alternators. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.
- Compatible with Chevy: for Avalanche 1500 2003-2004 5.3L, for Avalanche 2500 2003-2004 8.1L, for Express 1500 2003-2004 4.3L 5.3L, for Express 2500 2003-2004 4.3L 4.8L 5.3L 6L, for Express 3500 2003-2004 6L, for Silverado 1500 2003-2004 4.8L 6L 2003 4.3L 2003 2005 5.3L, for Silverado 1500 HD 2003 2005 6L, for Silverado 2500 2003-2004 6L, for Silverado 2500 HD 2003-2005 6L 6.6L 8.1L, for Silverado 3500 2003-2005 6L 6.6L 8.1L, for SSR 2003-2004 5.3L 2005 6L, for Suburban 1500 2003-2004 5.3L, for Suburban 2500 2004-2005 6L 8.1L, for Tahoe 2003-2004 4.8L 5.3L, for Trailblazer 2006 5.3L
- Compatible with GMC: for Envoy 2005-2006 5.3L, for Savana 1500 2003-2004 4.3L 5.3L, for Savana 2500 2003-2004 4.3L 4.8L 5.3L 6L, for Savana 3500 2003-2004 6L, for Sierra 1500 2003-2004 4.3L 4.8L 5.3L, for Sierra 1500 HD 2003 2005 6L, for Sierra 2500 2003-2004 6L, for Sierra 2500 HD 2003-2005 6L 6.6L 8.1L, for Sierra 3500 2003-2005 6L 6.6L 8.1L, for Yukon 2003-2004 4.8L 5.3L 6L, for Yukon XL 1500 2003-2004 5.3L 2003 6L, for Yukon XL 2500 2003-2005 6L 2003 2005 8.1L
- Compatible with: for Buick Rainier 2004-2006 5.3L; for Cadillac Escalade 2003-2004 5.3L 2004 6L, for Escalade ESV 2003-2004 6L, for Escalade EXT 2003-2004 6L; for Hummer H2 2003-2005 6L; for Isuzu Ascender 2003-2006 5.3L; for Saab 9-7x 2005-2006 5.3L
- Replace for Part Number: for ARROWHEAD (OLD): ADR0290-200, for ARROWHEAD: ADR0290-220, for FAMILY: AD244 HO, for J & N: 400-12236, for LESTER: 8292-200, for PIC: 240-6223H, for WAI: 8292N-253A
- Specs: Product Type: Alternator, Voltage: 12, Rotation: CW, Amperage: 220, Pulley Class: S6, Regulator: IR, Fan Type: IF, Clock: 12
- 【Specifications】Voltage: 12, Amperage: 220, Rotation: CW, Pulley Class: S6, IR/IF
- 【Replace Part Numbers】Fit for ADR0290-200, 400-12236, AD244 HO, 400-12236, 8292-200, 240-6223H, 8292N-253A
- 【Fit For】2003-2004 Chevrolet Avalanche 1500 2500, 2003-2004 Chevrolet Express 1500 2500 3500, 2003-2004 Chevrolet Silverado 1500 2500, 2003-2005 Chevrolet Silverado 3500, 2003-2004 Chevrolet Savana 1500 2500 3500, 2003-2004 Chevrolet Suburban 2500, 2003-2004 Chevrolet Tahoe, 2003-2004 GMC Sierra 1500 2500, 2003-2005 GMC Sierra 3500, 2003-2004 GMC Yukon
- 【Quality】High-output alternator with superior performance can help car get more sustained horsepower, can also support heavy-duty systems.
- 【Satisfaction Service】1 YEAR SATISFACTORY WARRANTY. If unfortunately did not work well, please kindly contact us.
Last update on 2025-07-04 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API
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FAQ:
Q: What happens when your alternator goes bad on a GMC Sierra?
A: As described above, a bad alternator will drain your Sierra’s battery fast. When the battery gets so dead it will no longer be able to power your Sierra’s ignition system. As the ignition system is no longer able to produce a full powered spark, the engine will begin to sputter and stall.
Q: Why does my GMC Sierra not start when the key is turned?
A: As the alternator can no longer supply your Sierra with an adequate power supply, it will begin to feed off of the reserve in the battery. Once this battery reserve hits a certain level, the vehicle will begin to run erratically and will no longer start when the key is turned.
Q: How do I know if my alternator is bad?
A: With the engine just fired up, you should get over 14.2 volts. If you got 14.2 or more volts, the alternator is charging fine. If it’s still showing in the 12’s, it’s time to replace the alternator. If it’s producing a voltage level in the 13’s, go ahead and take it into a parts store and have it tested. It’s probably bad.
Q: How to use a voltmeter on a GMC Sierra?
A: Set it to read voltage. Specifically, you’ll need to set it to 20V DC. With your Sierra turned off, you’ll connect the negative side of the meter to the negative battery post or wire. You’ll then touch the positive side of the voltmeter to the positive battery wire.
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