C 3500 Truck 2WD V8-379 6.2L DSL VIN C FI (1992)
Load Compensator: Technical Service Bulletins
Brakes - Height Sensing Proportioning Valve Service
File In Section: 5 - Brakes
Bulletin No.: 16-50-08
Date: August, 1996
Subject:
Revised Lever on Height Sensing Proportioning Valve (Service Procedure)
Models:
1991-94 Chevrolet and GMC C 3500 Heavy Duty Models
This bulletin is being revised to add 1992-94 Model Years. Previous Divisional Publication Numbers were:
Chevrolet
91-374-3D
GMC
91-5-128
GM of Canada
91-5-138
1991-94 C 3500 HD series are equipped with a rear suspension height sensing device which optimizes the brake proportioning valve setting for the load
the vehicle is carrying. The height sensing system "fine tunes" the brake balance in vehicles subjected to a range of loading conditions.
Occasionally, vehicle modifications by body builders or owners influence the height sensing device. If a vehicle has had rear suspension modifications
which affect its trim height or spring rate, and the driver comments about the brake modulation characteristics of the vehicle, it is recommended that the
height sensing system be revised as described below:
Service Procedure (Figures 1-4)
1.
Remove load valve lever assembly (Figure 1).
