Can't say as I'd recommend Camping World for PPI work. They are a good place for buying stuff, & some installations. There is a CW off Rocklin Road exit on I-80, but again...
If you need a fully qualified chassis shop, try Sacramento Truck Center, 916-286-2000. If you worry about the engine, you could escalate to Cummins West in West Sacramento- 916-371-0630. If worried about hydraulics, Berendsen Fluid Power also in West Sac: 916-372-0550. If house issues, any good local mobile service outfit would do; there is a Norcold guy in the Sac area whose name I could scare up.
If its an Alpine Coach, Apex or SE I sent you a PM, if its an Avalanche definitely call me.
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project