alexrckid

just saw recently on a TV show called All Girls Garage(Victory channel for me in North Myrtle Beach) where thay swapped out a stock complete rear axle out of a 2009 HHR LT for one out of a Coablt ss that they found at a auto yard. went in with VERY LITTLE issue and as a result of the swap that now had REAR DISC BRAKES......problem would be finding that Cobalt SS rear axle....

donbrew

Been talked about before. Shouldn't be any issues.

RJ_RS_SS_350

Sounds great... problem with TV show ideas is they typically only show a few seconds of the actual work. And who knows if it's actually being done 'correct'. You may also need a proportioning valve, maybe a master cylinder, ???.

One plus is not having to adjust your drum brakes anymore!!

donbrew

There is no actual proportioning valve with the ABS system, the EBCM handles that. I don't know if you would need to swap out the EBCM from a Cobalt, maybe the same part number.

The MC is split diagonally so, probably no problem there. LF-RR, RF-LR.

Probably just a plug disc brakes in sort of thing.

RJ_RS_SS_350

So the HHR that the axle assembly is going into would need to have ABS?

donbrew

Not sure about that. Cars without ABS do have a proportioning valve.

Oldblue

Upgrade the front discs

https://www.chevyhhr.net/forums/brak...ard-hhr-42938/


Frenchy42 did a swap from a Cobalt SS 4door sedan the how to is around here somewhere

Greybeard999

This was bantered about years ago here on the forums. If I remember correctly it bolts right in, no need to change valving, the tricky bit is finding e-brake cables. A couple of guys had done it.

pbatmen

Greybeard999, this is a very easy swap if you can find a donor axle, I will bump my original thread to the top for you and take a look, great info by many members on the subject for years.

Greybeard999

Thanks... I wish I could do this swap myself, but... you know, life gets in the way of living.