Is it worth repairing or replacing the transmission on a 2005 Cadillac STS?

As a general rule of thumb, a transmission replacement on a 2005 Cadillac STS (luxury segment, vehicle value roughly $6,000–$6,720) is usually worth it when the installed cost stays under about $2,400 — roughly 40% of what the vehicle is worth.

What years of Cadillac STS does a remanufactured or new transmission fit?

Based on vendor-verified fitment data across 53 listed transmissions, remanufactured and new transmissions for this model cover the 2005–2011 model years. Always confirm your exact VIN or engine/transmission code before ordering, since fitment can vary by submodel or engine.

2005 Cadillac STS Transmissions

Remanufactured transmissions that fit the 2005 Cadillac STS. Each unit below is matched to this vehicle, warranty-backed, and shipped with freight quoted at checkout from Peak Powertrain.

Available Transmissions (5)

5L50E Automatic Transmission Assembly
Price
$3,072.00
Condition:
remanufactured
5L50E Remanufactured Automatic Transmission
Price
$0.00
Engine:
4.6L
Condition:
remanufactured
5L40E Remanufactured Automatic Transmission
Price
$0.00
Engine:
3.6L
Condition:
remanufactured

2005 Cadillac STS Transmissions

Available Transmissions (5)

5L50E Automatic Transmission Assembly

5L50E Remanufactured Automatic Transmission

5L40E Remanufactured Automatic Transmission

2005 Cadillac STS Transmission Market Context

Is replacing the transmission worth it?

Frequently Asked Questions

Used Transmission

Other Cadillac STS Years