Squeaking/Chirping coming from the rear in cold weather?

[Anthony]

So I have this squeaking that is occurring in cold weather. It's only getting worse as the temperatures are dropping here in MA. I always let the car warm up 4-5 minutes if the temperatures are below 40 degrees outside. Nevertheless, when I start driving (and the car isn't fully warmed up yet) I hear a squeak between 1-2 shifts and 2-3 shifts that sounds like it's coming from the rear of the car.

I also hear it when I back out of my very steep driveway. When I step on the clutch and brake in order to prevent myself from launching into the street I hear the squeak. It is NOT the brakes. It is the lateral change in momentum in between shifts and in my driveway that causes it. After the car is fully warmed up it disappears entirely.

I'd like to get this figured out before 25 degrees is "average" in the northeast.

Where should I start looking? I am almost convinced that it is the suspension which is why I'm posting it here. The car has some mods.

'13 RS
Anaconda
ZZP RS catback
MPFab intake
Trifecta tune
Moog end links
Eibach's
ZZP rear sway bar
BNR front sway bar
Aftermarket wheels and tires

It sounds as if some grease would completely solve the issue, however, I am not totally sure where an application of grease will be effective.

 

[Chevrolet Customer Care]

Hi Anthony,

We’re very sorry to hear that you’re experiencing this squeaking noise. Although we’re unable to provide technical advice, we’d like to reach out to your dealership on your behalf for further assistance. Please let us know if our help is needed. We are only a private message away!

Kristen A.
Chevrolet Customer Care

 

[Natesriv]

a noise like the engine twisting in its cradle as you go between gears? Tried pushing on the front, rear suspension (open the doors and stand on the sill and "jump" up and down)...squeaking?

 

[Anthony]

a noise like the engine twisting in its cradle as you go between gears? Tried pushing on the front, rear suspension (open the doors and stand on the sill and "jump" up and down)...squeaking?

No, sir. Neither of those. I hear the same squeak when I start the car right before the engine kicks over (if that helps). Could a loose exhaust connection cause this?

The engine cradle squeak (how you described) is very close though and would occur at the exact same time as this current squeak if it existed. The reason why I know it can't be that is because I'm 99% sure that it's coming from the rear of the car.

Also, the temperature of the car mechanically has absolutely everything to do with the squeak. If the car is cold, the squeak is there. Once it's warm it's gone completely.