On average, a replacement installed on a 2018 Chevrolet Silverado runs about $3,000 to $6,000, depending on whether you choose a rebuilt/used unit or a brand-new OEM transmission, plus local labor rates.
The 2018 Silverado uses different automatic transmission options depending on the engine and trim, and prices vary with whether you source a new, rebuilt, or used unit. This article explains typical price ranges and factors influencing cost, so you can budget and compare quotes from dealers and independent shops.
Transmission options and cost ranges
Prices vary by replacement type and the model's engine/transmission pairing. Here are the common paths and what they typically cost (parts only) before labor and installation.
- New GM OEM transmission (for the appropriate 6- or 8-speed family): commonly about $3,000 to $5,500 for the part itself, with an additional core charge in some cases and higher prices at dealers.
- Remanufactured or rebuilt transmission: typically $1,800 to $3,500 for the parts, often with a shorter warranty and lower upfront cost than a new unit.
- Used or salvaged transmission (with potential wear risk): roughly $800 to $2,000 for the part, depending on mileage and condition, plus installation.
- Warranty or performance options: some shops offer extended warranties or performance components which can add $0 to $1,500 to the price depending on coverage.
Labor costs add to the total and depend on shop rates, hours required, and any additional work (torque converter, cooler lines, valve body, sensors, or programming). Typical labor ranges from about $650 to $1,900 for installation, with total installed prices commonly falling between $3,000 and $7,000.
How to get a precise quote
To obtain an exact price, compare quotes from multiple sources and confirm the transmission type on your specific 2018 Silverado.
- Identify the exact transmission model used in your vehicle (for example, the appropriate 6-speed or 8-speed family) and confirm engine/Drivetrain configuration.
- Request quotes for: (a) new GM OEM transmission, (b) remanufactured/rebuilt, and (c) used/remanufactured from a reputable salvage yard.
- Ask about core charges, labor hours, and included components (torque converter, cooler lines, filters, seals).
- Inquire about warranties on parts and labor and whether the shop programs the transmission for your vehicle.
- Get multiple written estimates and verify the labor rate per hour and any environmental or disposal fees.
Having a clear comparison helps you make an informed decision about reliability, warranty, and long-term cost of ownership.
Warranty and what it covers
Warranty duration and coverage
Most reputable shops and remanufacturers offer some warranty on a replacement transmission. Common terms range from 12 months of coverage for parts with corresponding labor coverage, up to 3 years or 36,000–60,000 miles on later remanufactured units. Always read the fine print to understand what is covered (seal leaks, torque converter failure, mounting hardware) and what voids the warranty (improper installation, failure to perform required service).
When evaluating quotes, consider not only the price but the warranty length, what is covered, and whether a dealership or independent shop is offering the best value for your drivetrain and driving needs.
Summary
For a 2018 Silverado, transmission replacement costs vary widely based on whether you install a new OEM unit, a remanufactured/transmission rebuild, or a used part, and on local labor rates. Expect a total installed price roughly in the $3,000 to $7,000 range, with the parts alone typically around $1,800 to $5,500 depending on the option chosen. Getting several quotes, confirming the exact transmission model, and checking warranty terms are essential to making a sound financial decision.