GMC TRUCK SIERRA250 Transmission 242.GM9N05 1854047

( Brand: Gmc Truck ), ( Manufacturer Part Number: SIERRA250 ), ( Part Type: Transmission ), ( Conditions Options: 6.0 ), ( Genuine Oem: Yes ), ( Ipn: 242.gm9n05 ), ( Manufacturer Warranty: 90 Day ), ( Partout Id: A-115194253 )

Review GMC TRUCK Transmission Shift fits 2005

The GMC Sierra 2500, produced in the year 2005, is a heavy-duty pickup truck known for its robustness and reliability. One of its most crucial components is the transmission system, specifically the Allison 242.Gm9n05 5-speed automatic transmission. This transmission is a key contributor to the vehicle's impressive towing capacity and smooth driving experience.

The Allison 242.Gm9n05 transmission is a heavy-duty, torque-converter type automatic transmission, designed to handle the high torque outputs of the Sierra 2500's powerful engine. It features a unique torque converter design that delivers superior drivability, especially during heavy load conditions. The transmission's five forward gears provide a wide ratio spread, which results in optimal engine rpm during cruising speeds, leading to improved fuel economy and reduced engine wear.

The Allison 242.Gm9n05 transmission is engineered with robust materials and advanced engineering technologies to ensure durability and longevity. It boasts a cast iron case, which offers superior strength and protection against the harsh conditions encountered in heavy-duty applications. Additionally, the transmission's internal components, such as gears and bearings, are made from high-strength materials, ensuring they can withstand the high loads and torques encountered during towing.

The transmission's electronic control system enables advanced features like adaptive shifting and engine braking, which contribute to the Sierra 2500's impressive towing capabilities. The adaptive shifting feature adjusts shift points based on driving conditions and load, while the engine braking feature helps maintain vehicle speed during downhill descents, reducing the need for the service brakes and promoting better vehicle control.

The Allison 242.Gm9n05 transmission offers a smooth and refined driving experience, with seamless gear changes and excellent response to driver inputs. Its advanced engineering and robust design make it an ideal choice for the demands of heavy-duty towing applications, ensuring the GMC Sierra 2500 remains a reliable and capable workhorse.

1. Cost-effective: Buying a used transmission can save a significant amount of money compared to buying a new one.

2. Availability: Used transmissions are more readily available than new ones, especially for older model vehicles like the GMC Sierra 250 2005.

3. Functional: A used transmission that has been rebuilt or reconditioned can function just as well as a new one, providing reliable performance.

1. Unknown History: The history and maintenance record of the used transmission are unknown, which could lead to potential problems down the line.

2. Wear and Tear: Used transmissions may have worn out components that could fail, leading to additional repair costs.

3. Compatibility: It is crucial to ensure that the used transmission is compatible with the specific year, make, and model of the GMC Sierra 250 2005.

In conclusion, buying a used GMC Sierra 250 2005 transmission can save money, but it comes with risks such as unknown history, potential compatibility issues, and the possibility of worn out components. To mitigate these risks, it is recommended to purchase the transmission from a reputable dealer or seller, have it inspected by a professional mechanic, and ensure that it is compatible with the vehicle. Additionally, it may be worth considering the cost of a rebuilt or reconditioned used transmission versus a new one. Ultimately, the decision to buy a used transmission depends on the individual's budget, priorities, and risk tolerance.

Details:

All the above installation should be in accordance with manufacturer guidelines including proper quantity and fill levels of fluids any technical service bulletins updates. Shearing or breaking of teeth in a standard transmission is not warranted under any circumstances. B Failure caused by towing a trailer unless your vehicle is rated the manufacturer for. Engine warranty is contingent upon installation of new intake manifold gaskets.

D Failure caused by or related to collisions, theft, vandalism any act of God. Transmissions: Replace the following with new parts: front pump and output shaft seals, pan gaskets filter. All parts are covered by our 30-Day Money-Back Guarantee.

Engine installations follow the procedures: Replace following parts if applicable: timing belt, water pump, thermostat, spark plugs, fluids, oil pan gasket, and filter. Warranty is valid to original purchaser only. Warranty is contingent upon oil and filter change per manufacturers specifications as to type at installation every 5,000 kilometres thereafter. Manual transmissions follow the same procedure as above if applicable.

This part may have accessories that are attached and must be removed or switched for proper installation. Adjust shiftier and kick down cables linkage if applicable. Warranty covers slippage, shifting failures and/or bearing noise.

Clear all computer fault codes. 100% TESTED PARTS. Warranty is not transferable. The words un examined or unchecked on the delivery note/docket are not acceptable.

Flush or replace transmission cooler and lines.

part #: sierra250 prices

• $44.00-$141.95

specifications shifterfreddie:

• for makes: Gmc
• for years: 2005
• brand: Gmc Truck
• mpn: Sierra250
• part type: Transmission
• conditions options: 6.0
• genuine oem: Yes
• ipn: 242.gm9n05
• manufacturer warranty: 90 Day
• partout id: A-115194253

offer shifterfreddie:

• availability: In Stock
• sold: 0
• started: March 1, 2026
• quantity: 1
• options: Ship-to-home
• best offers: True

seller shifterfreddie:

• rating: 97.9%
• city: Bloomfield, Iowa
• # reviews: 19017

general shifterfreddie:

• Car Truck Parts Accessories > Transmission Drivetrain > Shifters, Cables Linkages
• condition: Used

returns shifterfreddie:

• time: 60 Days
• policy: Returns Accepted
• paid by: Seller

shipping shifterfreddie:

• class: Expedited
• service: USPS Priority Mail
• cost: $0.00
• type: Fixed
• carrier: USPS
• transit: 4-8 Days

payments shifterfreddie:

• wallet: Apple-pay
• other
• credit card: Mastercard

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