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GM 19178459 Transaxle

1996 GM

Customer Questions & Expert Answers (2)
19178459 GM Transaxle Product Photo 1 of 5
  • Part Description
    Transaxle, Automatic
  • Replaces
    19125043
  • Manufacturer
    General Motors
Make sure this part fits
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  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number19178459
    Part DescriptionTransaxle; Transaxle, Automatic
    Item Dimensions36.6 x 23.9 x 23.4 inches
    Item Weight220.50 Pounds
    ConditionRemanufactured
    Fitment TypeDirect Replacement
    Replaces19125043
    ManufacturerGeneral Motors
    SKU19178459
    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
    1996 Chevrolet Lumina6 Cyl 3.4LLS, LS 4 DOOR, LUMINA, MONTE CARLO
    1996 Chevrolet Monte Carlo6 Cyl 3.4LLS, LS 4 DOOR, LUMINA, MONTE CARLO
    1996 Oldsmobile Cutlass6 Cyl 3.4L2 DOOR, 4 DOOR
    1996 Pontiac Grand Prix6 Cyl 3.4L2 DOOR, 4 DOOR, GT 2 DOOR, SE 2 DOOR, SE 4 DOOR
  • 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 19178459 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How to remove and install a Transmission Assembly on Pontiac Grand Prix? Posted by Lawton V.
    A:
    Before the removal of the transaxle, the negative cable of the battery must be disconnected, and if there is an existent Anti-hijack system also known as Theft lock audio system, it must be turned off. Lift the car by using the jack and place it on the jackstands and then drain the transaxle. Disconnect bolts and cancel the torque converter cover and be sure to note the orientation of the torque converter and driveplate to properly align it at the time of reassembly. There are a number of bolts that hold the torque converter to the driveplate; to gain access to them, turn the crankshaft pulley bolt. Second, disconnect the starter motor and the driveaxles, take off the speed sensor and electrical connectors of the transaxle, and, if there are, sever any vacuum hoses. Any exhaust parts that hinder the removal of the transaxle should be taken off and the TV cable if existent should be disconnected, the shift linkage should also be disconnected. Place an assist with the three-bar support fixture and, then, take off the engine mount strut brackets. Place a jack underneath the transaxle ideally a hydraulic jack and disconnect the transaxle from the brace connecting the transaxle with the engine and the bolts holding the transaxle to the engine. Lower the transaxle a little further to seporate and cap the cooler lines just to make sure all the fluids are drained out. Perform an operation of disconnecting the dipstick tube, the tie rod ends, then unbolt the steering rack, and the engine mount nuts and front subframe assembly before you proceed to unscrew the Bolts that fix the front subframe assembly. Remove the transaxle as far as it is possible to pull it back to disengage the dowel pins situated in the engine block to the transaxle then lower the front subframe and a transaxle off the car. For installation, make sure the torque converter is fully mated to the transmission; rotate the torque converter while attempting to push it forward towards the transaxle and the converter will "thunk" into place. Apply multi-purpose grease on the torque converter hub, thereafter lifting the transaxle and the subframe into position and ensure it is parallel to the ground. Insert the dowel pins on to the torque converter and mate the converter splines with the driveplate splines, after that put the housing onto the engine and tighten the bolts that connect the housing to the engine as well as the torque converter to driveplate bolts to the proper torque. The suspension and chassis part should be reinstalled, jacks should be taken off and the dipstick tube should be installed. Bolt the starter motor back in place , reconnect the vacuum hoses if there are any, reconnect the shift and TV linkage and plug the electrical connector in. Torque converter cover, driveaxles and speedometer/speed sensor cable should be then installed. Replace/bend the shift linkage, replace any exhaust parts, lower the vehicle, fill the transaxle, road test the vehicle and check for any leaks.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / Feb 17, 2026

Genuine GM Part 19178459, the Right Choice

To ensure reliability, purchase GM part # 19178459 Transaxle. 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 Lumina, Monte Carlo models. It fits Oldsmobile Cutlass. It also fits Pontiac Grand Prix.

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