Q: Engine swap 2005 Cadillac CTS 3.6l

asked by on December 12, 2016

Since I have the 3.6L engine unfortunately blown but would I be able to downgrade to a 2.8 like a plug in & play into the car without any issues ??

My car has 168000 miles.
My car has an automatic transmission.

Hi there - while the 2.8 may bolt up, and the (automatic) transmission is the same, the electronic control software is different. Swapping engine and transmission controllers from the 2.8l into your CTS MAY allow a relatively smooth swap, but I would expect some challenges. Good luck with your swap!

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

My horn won't work
The horn being inoperative could be from either the steering wheel clock spring, or the horn assembly. Both have been known to cause the problem you described. The Check Engine Light could be on for a sensor problem, or a...
Unknown oil leak in a 2003 Chrysler PT Cruiser
Engine oil leaks will generally get worse over time so identifying the source of the leak and repairing the leak should be carried out as soon as possible. These engine are known to develop leaks at the front engine seal...
I heard a loud noise from right side of my engine. My partner raised the engine, now it will not start
Hi and thanks for contacting YourMechanic. If your engine was making a loud noise and when the engine was throttled up, there is a possibility that the engine may have a connecting rod that could be knocking and getting ready...
My car is not starting.
Hi There, This may be related to many different possibilities, some of which may be related to a lack of spark and some of which may be related to a fuel delivery problem or a combination of both. Things like...
My coolant light keeps coming on in my Volvo XC90 and I notice that I keep having to fill it because it keeps going below the max
It sounds like the leaking may be potentially be near or at the water pump, resulting in the coolant leaking onto the belt and causing the squeaking sound. The other possibility may be that the squeaking may be indicating that...
2005 hummer temp gauge drops off and than sputters and sometimes dies. temp up and drives fine
It has to first be determined if the actual engine temperature is really fluctuating or instead the stalling is just simply a coincidence with a gauge malfunction. A scan tool can measure engine operating temperature. Fuel supply faults are a...
2006 Chevy Impala....reduce engine power and service traction control are coming on now very often. At first it was like once a we
Hi Ericka. Thanks for contacting us today. Both of these warning lights typically indicate that a mechanical fault exists in the driveline (meaning transmission or differential). It's possible that they are being triggered by the same component failure, but it...
Car battery won't hold a charge
The battery should be carefully evaluated in a load test (https://www.yourmechanic.com/services/battery-is-dead-inspection). Batteries are very important. If the battery only has a marginal pass on the load test you should just simply install a new battery (https://www.yourmechanic.com/services/battery-replacement) to reduce diagnostic headaches....
How long does it take for the check engine light to go off after changing a pcv valve
Hi Christopher. Most of the time, OBD-II error codes don't erase on their own. When a repair has been completed, the ECU needs to be told that it has been done, which resets and clear the old codes and allows...

Related articles

A Buyer's Guide to the 2012 Cadillac Escalade
When When you’ve said “Cadillac Escalade”, you’ve pretty much said it all. The Escalade has been synonymous with luxury since it first hit the scene in 1999. With the 2012 edition, Cadillac proved nothing has changed. If you want to...
A Buyer’s Guide to the 2012 Cadillac SRX
The The 2012 Cadillac SRX is one of Cadillac’s top sellers and one of the more popular luxury crossover SUVs on the market. It has a fuel saving eco feature along with being practical and comfortable. Once the eco mode...
How to Buy a Classic Cadillac
Cadillacs are the ultimate in luxurious domestic vehicles and have been for more than century. Classic Cadillacs (https://www.yourmechanic.com/article/how-to-buy-a-classic-car-by-cheryl-knight) have been under the General Motors umbrella since 1909 and consistently rank at the top of a list of premier automobiles. Classic...