With all the talk of trans upgrades I have started to get a little nervous and confused. Please correct me if I am wrong, the Sun Coast IV and V are upgrades of the internals.
Does anyone know of any shop in NC that is reputable and can do the upgrades? The reason I ask is that I just recently got my D/A used, it had 13K on it. The previous owner had the juice with attitude installed on it. At 15K I changed all the filters, fuel, oil, trans. BTW thanks to eberyone on this forum for all the incite and help in getting that done. When I pulled the trans filter the fluid was purple, no the red it is supposed to be. I checked with a buddy that has a 05 D/A with the same miles and his is still red even after all the pulling he does. I changed out the fluid completely, but the color is not quite right. Thinking of flushing the system @30K. Should I wait or go ahead and do it now? I'm thinking hte previous owner abused the allison with the juice and traded the truck. Any help would be appreciated. Thanks.

Where in NC are you located before I suggest a place.

Steve overcash is in moresville NC.....he did my tranny and I would recommend him to anybody. Kennedy directed me towards him when I was ready to get my tranny done. Let me know and I can pm you his number.

With all the talk of trans upgrades I have started to get a little nervous and confused. Please correct me if I am wrong, the Sun Coast IV and V are upgrades of the internals.
Does anyone know of any shop in NC that is reputable and can do the upgrades? The reason I ask is that I just recently got my D/A used, it had 13K on it. The previous owner had the juice with attitude installed on it. At 15K I changed all the filters, fuel, oil, trans. BTW thanks to eberyone on this forum for all the incite and help in getting that done. When I pulled the trans filter the fluid was purple, no the red it is supposed to be. I checked with a buddy that has a 05 D/A with the same miles and his is still red even after all the pulling he does. I changed out the fluid completely, but the color is not quite right. Thinking of flushing the system @30K. Should I wait or go ahead and do it now? I'm thinking hte previous owner abused the allison with the juice and traded the truck. Any help would be appreciated. Thanks.
I know Royal Purple transmission fluid is purple in color. Was it a dark purple?

As long as you used a good quality synthetic you should be Ok.

I know Royal Purple transmission fluid is purple in color. Was it a dark purple?

As long as you used a good quality synthetic you should be Ok.
It wasn't a deep purple. I just don't think that the previous owner would have put trhat much into a new truck in terms of changing out the tranny fluid. The turck was bearly broken in for a diesel.

I'm in raleigh, nC.

Thanks forr all the help.

Don’t bet on that. I changed every bit of fluid from bumper to bumper with only 5k to synthetics. I’m not sayin he did, but a lot of us changed everything prior to hitting 10k.

I woudld bet someone threw soem Royal Purple in thier..

At 3000, miles I went to AMSOIL 100% in everything, at 15,000 mi. its running fine...

BTW: I am still looking to do a Suncoast IV...

ther is a shop in elizabeth city that can install the transgo kits and also i am sure could install the suncoast level s.....for any of you local nc guys im in plymouth and we have an extra level 5 we are looking to get rid of..pm me if you are interested or if you need the name of the shop.....

As for the dark fluid. I have seen quite a few of these with relatively low miles on them that had a very dark burnt looking fluid that didnt smell bad at all, even smelled like good clean ATF. GM has a TSB on the fluid color. Its all fine. I have tore these units down with the dark/purple fluid and found not a thing.

As for the shops in NC, cant help you there, but plenty of suggestions and if those come up empty, check with Joe at S/C for a recommendation in your area.