I have a 2011 GS and I'm not sure on bleeding the brakes.
Left rear-Right front then Right rear-Left front. CHECK !!
But,the caliper has 2 bleed screws,1 inboard,1 outboard.
Which bleed screw should I bleed First ???

Thanks

 

I always work farthest from master cylinder first so I do outside first then inside don't forget to bleed the anti lock brake pump. Good luck

 

these are diagonal set brake lines. Out of the service manual correct order is right rear inboard left front inboard left rear inboard then right front inboard then go back and do the outboard bleeders in the same order.

 

THANKS Guys !!!!

 

I've always bled the inboard bleeders first https://lmr.com/products/how-to-blee...ter%20cylinder.

 

I researched this before I did mine last month. Did the right rear, the passenger front, left rear and driver front. Everything seems fine.

 

I don't understand the logic here. Why wouldn't you just do a caliper, both bleeder screws, and then move on to the next? I see no advantage to doing everything twice... calipers don't hold very much fluid.

 

Applies to cars with one master cylinder reservoir going to both back wheels and other reservoir going to the two front. Not the case with a C6. The brake circuits are on opposing corners as Baxom mentions.
Also a proper ABS pump bleed requires a Tech2 or some other system to activate the pump valves for air removal.

C6 MANUAL BRAKE BLEEDING
Install a proper box-end wrench onto the RIGHT REAR wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve.
Submerge the open end of the transparent hose into a transparent container partially filled with GM approved brake fluid from a clean, sealed brake fluid container.
Have an assistant slowly depress the brake pedal fully and maintain steady pressure on the pedal.
Loosen the bleeder valve to purge air from the wheel hydraulic circuit.
Tighten the bleeder valve, then have the assistant slowly release the brake pedal.
Wait 15 seconds, then repeat steps 8-10 until all air is purged from the same wheel hydraulic circuit.
With the right rear wheel hydraulic circuit bleeder valve tightened securely, after all air has been purged from the right rear hydraulic circuit, install a proper box-end wrench onto the LEFT FRONT wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
With the left front wheel hydraulic circuit bleeder valve tightened securely, after all air has been purged from the left front hydraulic circuit, install a proper box-end wrench onto the LEFT REAR wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
With the left rear wheel hydraulic circuit bleeder valve tightened securely, after all air has been purged from the left rear hydraulic circuit, install a proper box-end wrench onto the RIGHT FRONT wheel hydraulic circuit bleeder valve.
Install a transparent hose over the end of the bleeder valve, then repeat steps 7-11.
After completing the final wheel hydraulic circuit bleeding procedure, ensure that each of the 4 wheel hydraulic circuit bleeder valves are properly tightened.
Fill the brake master cylinder reservoir to the maximum-fill level with GM approved brake fluid from a clean, sealed brake fluid container.
Slowly depress and release the brake pedal. Observe the feel of the brake pedal.

My GM manual does not specify doing inboard and outboard separately. But it is old and procedure may have been revised over the years.


See above for GM's sequence.

I agree. Both bleeders are on the same brake circuit.

 

Helpful post above!

 

Keep in mind if you want to bleed the entire system (including the ABS components), you will need a scan tool. A good idea every once in a while in these 10+ year old cars.
Toys