Go with Good Sam leave AAA (CSAA in this case) at home.
I have had serveral RV's, both Slide ins and conventional towable all with Dually trucks. All 4x4 and either a big-block gas or deisel.
Over the 20 years of RVing, we have had to call on them.
I have both CSAA (a distant cousin of AAA here in CA) and Good Sam to get real coverage. CSAA requires road coverage if yo have insurance with them (talk about a captured audience). I now calculate this cost into the insureance premium, drives my agent crazy. Little things they don't want you to know. Here comes the story... sorry for hte long post.
About 9 years ago we were traveling accross the central valley, it was midday and the outside air temp was 105 degrees. I am driving a GMC 3500 crew cab, 4x4, 454 big block, with a Vacationer 11' 4" slide in. Talk about heavy. When out of no where the left inner wheel goes BANG. Tore the mud flaps up and over the wheel so it was making a loud noise. Bang-Bang on each wheel rotation. I thought the engine had gone, since the truck was still sitting flat. Gotta love those training wheels. Back to the story, wife calls CSAA and gets told they don't cover dually's... don't tell me that when they gladly took my money. She then remember that we have Good Sam coverage and called, they sent out a standard wrecker with only a 2. 5 ton floor jack. The only thing it did was to punch the wheels of the jack through the asphalt. Then they call for one of the big boys to come out. The second wrecker arrived within minutes with much bigger jack, changed the tire in no time, he had air tools too which made the job quicker. Even put the bad wheel and tire back up where it belongs. Said there was no need to make a mess in the RV. Called around for a place that might have the exact replacement (via the wreckers head quaters) and told me how to get there. What great service. And have had nothing but good luck with them
Since then discovered that it was overloaded, not much but still over loaded. With the family growing, moved to a conventional towable and never looked back. Also got smart and moved to a Dodge with a diesel Should have done that when I got the GMC in 90...
In my hubble opinion you can't have a bad experence with Good Sam or atlease we havn't.
Happy Rving...