GMC Motorhome Products
by
Duane Simmons

aka "Mr. Onan"

4320 Fernwood Ave.
Orange, CA 92869
714-633-4731
simmee@juno.com

 

GMC Motorhome Technical Booklets


IC Board Repair

Complete Restoration and Repair of GMC's OEM Onan Control Boards
Usual 1 to 2 day turn around time.


Electronic Cruise Control

Including Rostra Actuator 250-1223, Control Unit 250-3032, Pulse Generator 250-4153 and GMC Motorhome Specific Installation Instruction Supplement

Normal one day shipping, but possible two week delay if I am out of stock



Custom GMC Holding & Water Tanks

Standard configuration for GM configured coach & custom fitting locations

* Non-corrosive polyethylene tanks - Totationally Molded - Heavy wall density

* One piece seamless construction - 3" pipe outlet & float gauge insert ring - Sensor buttons

* UPS shipping available - normal 2 - 3 day availability - 1 year factory warranty

GMC-1   30 Gallon Holding Tank

GMC-2   19 Gallon Holding Tank

GMC-3   35 Gallon Holding Tank

GMC Water   36 Gallon Fresh Water Tank

 

Several GMCers have installed the 19 gal. tank (40" x 21.5" x 5") with the drain facing forward such that a common 3" connecting pipe does the plumbing for both tanks w/macerator on one end of pipe (if desired) & a 3" hose connection on the other end (driver side). 3" Gate valve (s) can be placed where desired & space available. The 3" hose connection is just aft of the driver side rear wheel (not at rear) & is located behind the coach frame & is twisted down when in use & twisted up while not being used. All the plumbing is above the bottom of the coach frame & nothing to be knocked off and uphill draining is not required. Royale Training wheels no longer needed. Tank is affordable, however there is some labor required to install...not just a replacement...well worth it.

Since nothing is standard with the Royale and other transmode coaches, tank inlet size & location information must be provided by owner.


Polyethylene Battery Tray
for 26' GMC's

Low cost polyethylene battery tray for rear battery of 26 ft GMC (same as material & process as the custom holding tanks). No moving parts to jam....just slide the tray out & place on a box or stick while servicing the batteries & push back into traveling position. The space available for the batteries is 7 1/4" wide by 21" long (two Trojan Golf cart batteries end-to-end). The overall length is 22 3/8" & overall width is 7 7/8".
A handle is built into one end for pulling the tray out of the storage position. Two drywall screws into the wood floor, on each side of the handle, will keep the tray from moving while stowed, w/o having a hole in the tray.

Barrery Tray..... $35
S&H................. $ 7
Total ................ $42


Duane Simmons
4320 Fernwood Ave.
Orange, CA 92869
714-633-4731
simmee@juno.com