GMC / Chevrolet Small Case Alternator

2000-2013 Chevrolets & GMC's with 4.8, 5.3, 6.0 and ,6.2 motors. (see below for more specific fitment)

This is our most popular GM Alternator that fits most common GM Motors in a Dual Spool mount.

Small Case Denso Hairpin, 3 pin 15V Setpoint with harness.

Supplied with Brand new internals : NSK Bearings, 12-50amp diode rectifiers, 15V set point voltage regulators. These units produce 320amp at 2000rpm while producing 150 amp at 600rpm.

Small Case Alternators
160amps @ 650rpms
Full amps @ 1800rpms

AutoTech Engineering Alternators require a .5 inch smaller belt than your OEM Alternator

AutoTech Engineering alternators need a minimum of 650rpm to charge.

Unless otherwise quoted or instructed, our units come with the OEM voltage output for plug-and-play alternators. The quoted voltage settings are already built into the alternator's voltage regulator. Remember that in PCM- and ECU-controlled vehicles, the vehicle's “brain/computer” controls the voltage.

Boosted Harness Option
A boosted harness option is available at an additional cost. If you select this option, your harness will arrive with the diode already installed. You can choose 15.3, 15.5, or 15.7 volts.

What is a Bypass?
If you choose to have a bypass, you are wiring around the PCM or ECU voltage control. This allows us to customize the charging voltage beyond what the vehicle’s computer normally permits. In most cases, the battery warning light will remain illuminated.

Bypass charging voltage: 14.8V.

Important: A PCM/ECU bypass is required when using the boosted harness.

Need help wiring your bypass or have questions? Find out more here:

Tutorial videos & Frequently Asked Questions

Warranty: One year on parts and lifetime labor.

Order Timeframes
Build time is 14 days.
Powder coating adds up to 5 business days.
Shipping takes 5-7 days.

If you use Klarna, Sezzle, or Affirm, please allow an additional seven days for processing.

https://autotechengineeringusa.com/powder_coat_color_chart

• Buick     Rainier  5.3L        2004 - 2006
• Cadillac Escalade               5.7 / 6.0 / 6.2      1999 - 2004
• Chevrolet            Astro Van            4.3L        1996 - 2005
• Chevrolet            Avalanche           All Engines          2002 - 2004
• Chevrolet            Camaro 5.0 / 5.7                1998 - 2002
• Chevrolet            Express Van w/4 pin plug                             1996 - 2016
• Chevrolet            Full Size Truck    All Gas Engines  1996 - 2004
• Chevrolet            Full Size Truck    6.6L Duramax     2001 - 2007
• Chevrolet            S-10 / Blazer       4.3L        1994 - 2004
• Chevrolet            SSR         5.3 / 6.0                2003 - 2006
• Chevrolet            Suburban            w/4 pin plug       1996 - 2004
• Chevrolet            Tahoe/Full Size Blazer    All Gas Engines  1996 - 2004
• Chevrolet            Trailblazer           5.3L        2003 - 2006
• GMC      Envoy    5.3L        2003 - 2006
• GMC      Full Size Truck / Sierra    4.3L        1996 - 2004
• GMC      Full Size Truck / Sierra    4.8L        1999 - 2004
• GMC      Full Size Truck / Sierra    5.0L        1996 - 1999
• GMC      Full Size Truck / Sierra    5.3L        1999 - 2004
• GMC      Full Size Truck / Sierra    5.7L        1996 - 2000
• GMC      Full Size Truck / Sierra    6.0L        1999 - 2005
• GMC      Full Size Truck / Sierra    6.6 Diesel             2001 - 2006
• GMC      Full Size Truck / Sierra    7.4L        1996 - 2000
• GMC      Full Size Truck / Sierra    8.1L        2001 - 2005
• GMC      Safari     4.3L        1994 - 2004
• GMC      Savana Van         w/ 4 pin oval plug             1996 - 2016
• GMC      Suburban            w/ Oval plug       1996 - 2004
• GMC      Yukon   w/ Oval plug       1996 - 2004
• Hummer              H2           6.0L        2003 - 2007
• Oldsmobile         Bravada                4.3L        1994 - 2001
• Pontiac Firebird 5.0 / 5.7                1998 – 2002
• Cadillac    Escalade    6.2L     2014 - 2019
• Chevrolet    Silverado 1500 / 2500 / 3500    All Gas Engines     2014 - 2018
• Chevrolet     Silverado 1500 / 2500 / 3500  6.6L Duramax  2014 - 2018
• Chevrolet     Suburban   All Gas Engines  2020 - 2018
• Chevrolet    Tahoe  All Gas Engines  2014 - 2018
• GMC    Sierra 1500 / 2500 / 3500  4.3L / 5.3  2014 - 2018
• GMC    Sierra 1500 / 2500 / 3500 6.0L   2014 - 2016
• GMC   Sierra 1500 / 2500 / 3500   6.2L   2014 - 2018
• GMC   Sierra 2500 / 3500   6.6L Duramax   2014 – 2018  
• GMC    Yukon   All Gas Engines   2014 - 2018