Chassis Systems
Documents related to GMC Chassis
A detailed DIY document on the one-ton front end
Bill Hubler was one of the first to engineer and install the one-ton front end on a GMC motorhome
Fuel Injection - EBL system IAC Control
2024-08-23
How the EBL system IAC control works.
Zay Brand's excellent document on dash HVAC operation and improvements
Calipers use a built-in motor for parking brake. Kit developed by Albert Branscombe
GMCWS technical seminar 10/10/2006 by Chuck Botts, Jim Kanomata & Grandpaw Billy
A better fix than the APC for the alternator exciter wiring overheating issue
DO NOT replace the main fusible link with a fuse or circuit breaker as recommended by some.
Six wheel laser level wheel alignment
2024-02-04
How I use a laser level to check and align toe and camber on all 6 wheels.
All about GM HEI distributors
2024-02-01
Everything you wanted to know about HEI distributors
My reasoning on the lower rear-end ride height on the GMC.
Delco HEI Ignition Service Info
2024-01-24
All you ever wanted to know about HEI ignition, including matching coil and pickup polarity
Adding a separate second filler vent line for the front tank for a better refuelling experience.
Lifting fuel tanks when alone
2023-09-05
This leaves to floor jack out of the problem
This TunerPro XDF file has additional Help descriptions of terms.
Gauge issues could be poor connections at the electrical connector pins
Airbag Shutoff Valves
2023-04-20
Parts list and info for Schrader valve, ball valve, and fittings for airbags
Advantages of the EBL add-on to the Howell (or GM Throttle Body) system
Electric Parking Brake Installation (EPB)
2022-09-28
Installation of Albert Branscombe's EPB on my coach
A great collection of info on the engine V-belts, types and sizes