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DO NOT replace the main fusible link with a fuse or circuit breaker!DO NOT replace the main fusible link with a fuse or circuit breaker as recommended by some.
- RF_Burns
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GMC Motorhome Tire & Wheel InformationThe definitive guide to tire and wheel options for the GMC Motorhome
- Christo
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Universal joint in tilt steering column is wornI hope this fixes the last of the "play" in my steering
- RF_Burns
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What every GMCer needs to knowA list of useful GMC MH information from soup to nuts!
- RF_Burns
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Embedded Lockers Flash What's Up DisplayInstructions for the What's Up Display for the EBL
- billvv
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Disc brake upgrades, part numbers and donor vehiclesThe Eldorado calipers are 63.5mm and have a parking brake lever. Be sure to use D122 pads with...- Christo
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Heat/AC Dash Control and Vacuum Control operation 2021-05-30John gave a great presentation at the 2018 GMCMI Tucson!- Richard RV
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Resource 'Starting an engine that has been sitting for an extended period'
Technical Corner MAINTENANCE, RENOVATIONS, AND MORE Starting an Engine That Has Been Sitting for an Extended Period Larry Weidner | 1978 Royale | Menomonie, Wisconsin The following is just my humble opinion. I offer this FYI. Your milage may vary. Over the last 15 yrs I have seen a number of people get into GMCing buying a GMC that has been sitting for a number of years. In several of those cases, they were able to get the GMC started, put it in gear and drive it home. Sometimes they...- Christo
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Resource 'GMC Motorhome Tire & Wheel Information'
Wheels OEM (Factory) Steel Wheels Firestone Accu-Ride / Accuride Size: 16.5" x 6" Interesting article about the oddball wheel diameter Weight: ~40 lbs. Part #27995 (GM #359402) or 27725 Used from VIN #TZE165V101674 (mid-1975) onward For radial tires 85 PSI max Part number and ® (circled R) or "Radial" stamped on inside of wheel near valve stem Part #27604 (OBSOLETE) For bias ply tires ONLY. Do not use with radial tires. Part number stamped on outside of wheel between two lug holes...- Christo
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Operation Conquest, June 1974
2021-12-20
A very detailed GMC document presenting the engineering changes on 1975 and newer coaches
The elusive TH425 manual shifter shaft seal
2021-09-23
A diagram of the shifter showing the O-ring seal on the shifter shaft
Measure voltage across a fuse and the chart shows the current flowing through it
My thoughts on the one-ton front end upgrade after 10 years experience
GMC Heritage Cruisers Tech Talk on my experience with inexpensive LFP Batteries
Mostly how-to and "what I did" photos.
Get better dash AC operation with Duracool etc. Pros and cons. A rally presentation by Emery Stora
Fixing the steering wheel binding while turning, from Ken Henderson
Info on how the JC-4 pump actually works
Ontario Canada RV propane refill regulation
2021-04-07
See section 3 which exempts inspection sticker requirements
Micro-level Ride height control system
March 2018
Electronic ride height control system with auto campsite leveling and wireless remote control
GMC Maintenance and Information Notes
2021-02-24
An excellent resource of information from the early '90's
An excellent article about the care and using of LiFePO4 batteries for the house
3 different Max 3DS files
T
Coachman "It's So Simple" UNI-LOUNGE Manual
2020-10-15
This guide came tied to the Dinette in a 76 Birchaven when purchased new.
How to center your steering box so your coach will drive striaght down the road
This is a great 3 part article about the history of the GMC Motorhome.