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GMC 25877026 GENERATOR Assembly

2007-2014 GMC

Customer Questions & Expert Answers (9)
GM 25877026 GENERATOR Assembly
GM 25877026 GENERATOR Assembly
GM 25877026 GENERATOR Assembly
GM 25877026 GENERATOR Assembly
GM 25877026 GENERATOR Assembly
GM 25877026 GENERATOR Assembly
GM 25877026 GENERATOR Assembly
GM 25877026 GENERATOR Assembly
GM 25877026 GENERATOR Assembly
GM 25877026 GENERATOR Assembly
GM 25877026 GENERATOR Assembly
  • Part Description
    Generator Asm ; Generator, Engine Electrical
  • Replaces
    15905871, 15857608
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers

  • Related Parts

    Shop for related parts for your vehicle

  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number25877026
    Part DescriptionGenerator Asm ; Generator, Engine Electrical
    Other NamesAlternator
    Item Dimensions9.4 x 8.2 x 7.8 inches
    Item Weight19.40 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces15905871, 15857608
    ManufacturerGeneral Motors
    SKU25877026
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California’s Proposition 65

  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2007-2014 GMC Sierra6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 4.8L Flex, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex1 TON CREW CAB, CREW CAB 1 TON, CREW CAB 1 TON 119.0, CREW CAB 1 TON 137.0, CREW CAB 1/2 TON, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON, EXTENDED CAB 1 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 1/2 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CAB CHASSIS 1 TON 161.5, EXTENDED CREW CAB 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5
    2007-2014 GMC Yukon8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex1/2 TON, 3/4 TON, XL 3/4 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE

  • Customer Questions & Expert Answers

    Q:
    I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 25877026 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to Remove the Alternator on Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL? Posted by Customer
    A:
    To remove the alternator on a V6 model, start by disconnecting the cable from the negative battery terminal and removing the air intake duct and accessory drive belt. Unbolt the clamp that secures the heater outlet hose to the alternator mounting bracket, disconnect the electrical connector from the alternator, and peel back the weather boot from the B+ terminal to remove the battery cable from the alternator. Finally, remove the alternator mounting bolts and the alternator. The installation is the reverse of removal. On V8 models, follow similar removal steps as the V6 models. Again, installation is the reverse of removal.
    Posted by GMPartsGiant Specialist
    Q:
    What is the first step in disconnecting the alternator for the 2014 Cadillac Escalade? Posted by Customer
    A:
    Disconnect the cable from the negative battery terminal.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Alternator
    Q:
    What should you do next after removing the air intake duct and accessory drivebelt for the 2007 Chevrolet Avalanche? Posted by Customer
    A:
    Detach the clip for the engine wiring harness from the air conditioning compressor and condenser hose bracket and remove the bolt from the bracket that secures the air conditioning compressor and condenser hose.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Alternator
    Q:
    How is the process different for the 2013 Chevrolet Silverado? Posted by Customer
    A:
    For a V8 model, instead of detaching the clip and bolt for the air conditioning compressor and condenser hose bracket, you simply peel back the weather boot from the B+ terminal and disconnect the battery cable from the alternator. Then, remove the electrical connector and two alternator mounting bolts before removing the alternator.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Alternator
    Q:
    How do you install the alternator on the 2010 GMC Sierra? Posted by Customer
    A:
    The installation process is simply the reverse of removal.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Alternator
    Q:
    What should you do next after removing the air intake duct and accessory drivebelt for the 2010 GMC Yukon? Posted by Customer
    A:
    Detach the clip for the engine wiring harness from the air conditioning compressor and condenser hose bracket and remove the bolt from the bracket that secures the air conditioning compressor and condenser hose.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Alternator
    Q:
    Would a 140 amp or a 160 amp be better for a vehicle? Posted by Customer
    A:
    The amperage needed varies on how many accessories the vehicle is running
    Posted by GMPartsGiant Specialist 10/1/2020
    Q:
    How many amps does this alternator produce? Posted by Customer
    A:
    This alternator is a 160 amp alternator
    Posted by GMPartsGiant Specialist 9/1/2020
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 25877026, the Right Choice

Your vehicle deserves only genuine OEM GM parts and accessories. To ensure reliability, purchase GM part # 25877026 GENERATOR Assembly. It is sometimes referred to as GMC Alternator. Our GM parts and accessories are expedited directly from authorized GM dealers strategically located all across the U.S. and are backed by the manufacturer's 12 month, 12,000 mile warranty. OEM GM parts are the best for restoring your vehicle to factory condition performance. This part fits specific GMC Sierra, Yukon models.

Affordable, reliable and built to last, GM part # 25877026 GENERATOR Assembly stands out as the smart option. GMPartsGiant.com is your prime online source with the biggest and best selection of genuine GM parts and accessories at giant discounted prices. We have the OEM GM parts and accessories you need at the wholesale prices. GMPartsGiant.com has you covered no matter what type of GM vehicle you drive. For detailed GMC parts information, click here.

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