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GM 17803781 Transmission

2007-2008 GM

Customer Questions & Expert Answers (3)
17803781 GM Transmission Illustration 1 of 1
  • Part Description
    Transmission, Manual
  • Replaces
    12491538
  • Manufacturer
    General Motors
Make sure this part fits
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  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number17803781
    Part DescriptionTransmission; Transmission, Manual
    Item Dimensions48.0 x 22.6 x 24.4 inches
    Item Weight230.10 Pounds
    ConditionRemanufactured
    Fitment TypeDirect Replacement
    Replaces12491538
    ManufacturerGeneral Motors
    SKU17803781
    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
    2008 Chevrolet Avalanche8 Cyl 5.3L Flex1/2 TON
    2008 Chevrolet Express8 Cyl 5.3L1/2 TON CARGO EXPRESS, 1/2 TON PASSENGER EXPRESS
    2007-2008 Chevrolet Silverado8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L FlexCREW CAB 1/2 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON
    2008 Chevrolet Suburban8 Cyl 5.3L, 8 Cyl 5.3L Flex1/2 TON
    2008 Chevrolet Tahoe8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex4 DOOR 1/2 TON
    2008 Chevrolet Trailblazer8 Cyl 5.3L4 DOOR
    2008 GMC Envoy8 Cyl 5.3L4 DOOR
    2008 GMC Savana8 Cyl 5.3L1/2 TON CARGO SAVANA, 1/2 TON PASSENGER SAVANA
    2007-2008 GMC Sierra8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L FlexCREW CAB 1/2 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON
    2008 GMC Yukon8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L FlexYUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE
  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 17803781 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What should be done with the Transmission Assembly before removing the torque converter for the 2007 Chevrolet Silverado? Posted by Verified Customer
    A:
    Mark the relationship of the torque converter to the driveplate. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Henry / Mar 14, 2025
    Q:
    What are the final steps after securing the Transmission Assembly for the 2008 Chevrolet Trailblazer? Posted by Rodney V.
    A:
    Install the transmission dipstick tube and seal, then install and securely tighten the transmission-to-engine bolts. Raise the rear of the transmission and install the cross member, then remove the jacks. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Apr 20, 2026

Genuine GM Part 17803781, the Right Choice

To ensure reliability, purchase GM part # 17803781 Transmission. It is sometimes referred to as GM Transmission Assembly. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Chevrolet Express, Silverado, Tahoe models. It fits GMC Savana, Sierra, Yukon.

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