I chased this issue for months on a 99 suburban with rear drums. Ended up being a stuck cable. I figured it out by taking all of the parking brake hardware out of the drum and removing the cables. I drove it like that for about a month then reinstalled with new cables. No issues since. It...
UPDATE!
replaced rear brake shoes. Drivers rear wheel cylinder for the third time. Drivers rear brake drum for the third time. Removed emergency brake mechanism from inside of drum. Pulled cables out of the backing plate. Let them rest on top of the rear axle. Went for 20 mile round-trip test...
UPDATE.
Discovered friction material on shoes is not mounted square with metal backing. On the drivers side rear shoe(long shoe) the bottom inside of the friction sticks off the metal backing by almost 1/8”. It is causing the shoe not to sit properly on the perch on the backing plate...
I may try that to verify if that’s the issue. At this point the drum and shoes are torched I’m sure. I’ll probably put drums and shoes on it once I determine what the issue is.
As in the shoe was wider than the drum? As in the metal part of the shoe not the friction material correct? Did you just grind it down or get different shoes? I will check this ASAP!
Update,
Both roll freely when cold. Can hear slight dragging on both sides. Drivers side seems to drag in only one spot.
Cold. Cracked bleeder with wheels elevated and spun several revolutions and did not notice a decrease in drag on drivers wheel.
Hot. Drivers Wheel still binds with...
He tried to say abs module which is possible but there is only one line running from the abs module to the rear axle. Then it splits above the rear diff
Still getting way to hot. Next step and I argue one I should have done sooner is to get it hot then crack the bleeder and see if drag releases at that wheel.
Shop claims warped drum (out of round). They replaced drum with warranty drum from oriley. Picked up drove home. Was at 250 degrees. Way better than before. We shall see how it goes.
Guys I disconnected the EBrake cable at the joint between the front and back just under the doors on the drivers side. Took it for a 15 mile ride and same issue. Do I need to disconnect them inside the drum to truly see if that is the issue?
I will be double checking all of this again very shortly. All hardware is new, I haven’t checked tension between sides. Shoes are cooked at this point I’m sure but we’re new and replaced with the wheel cyl both times. Backing plates had small grooves but I hit those with a small barrel sander...