Inspect your brake calipers if you have a g80 rear axle

[LordWayback]

If you have a 1999-2006 gmc Chevrolet suv/truck with the g80 4wd rear axle with dual pistons mine failed and will not hold brake pressure at the pedal while running

 

[Doubeleive]

bad seals, it happens

 

[LordWayback]

bad seals, it happens

Yep it just sucks because it can’t wait I’ve been waiting at the shop for 2 hours I may be here for up to 6 more hours due to it being a Sunday on Friday i couldn’t get any brake pressure despite bleeding straight to floor no resistance, woke up waiting for tow truck tow truck arrived and I magically had brake pressure because it’s colder the bad seals sealed enough to allow my truck to be flat bed towed

 

[LordWayback]

bad seals, it happens

I figured because it happened to me it’ll happen to someone else if they don’t get them checked out

 

[Doubeleive]

I figured because it happened to me it’ll happen to someone else if they don’t get them checked out

just happens from age, part of owning a older vehicle, the gmt800 stuff seems to hold up slightly better than the gmt900 I have already been thru 2 sets of front calipers, finally bought some heavy duty new oem towing rated calipers

 

[LordWayback]

just happens from age, part of owning a older vehicle, the gmt800 stuff seems to hold up slightly better than the gmt900 I have already been thru 2 sets of front calipers, finally bought some heavy duty new oem towing rated calipers

Atleast it wasn’t a steer one

 

[LordWayback]

just happens from age, part of owning a older vehicle, the gmt800 stuff seems to hold up slightly better than the gmt900 I have already been thru 2 sets of front calipers, finally bought some heavy duty new oem towing rated calipers

Mines been pretty reliable minus front end suspension and steering and the radiator really oh and fuel pump relays

 

[Tonyv__]

I thought that was just a dust boot portion

 

[Doubeleive]

I thought that was just a dust boot portion

it is but if that's blown out then dirt and contamination got in there

 

[Tonyv__]

it is but if that's blown out then dirt and contamination got in there

yeah That makes sense.