Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Brake Switch (Cruise Control): All Technical Service Bulletins
Brakes - Premature Brake Wear
PREMATURE BRAKE WEAR
Model and Year:
ALL CHEVROLET DEALERS
Whenever a condition of the brake remaining on with foot off the brake is encountered, an initial check should be made to insure that
this condition is not the result of a misadjusted cruise control cutoff switch or brake light switch. These switches which are mounted
at the brake pedal could allow for partial brake engagement. To check for this condition, pull the brake pedal fully rear-ward against
pedal stop. If an audible "click" can be heard, the switch is out of adjustment and may be the cause of the partial brake engagement.
After audible "clicks" have stopped, the switch will be properly adjusted.
A maximum rearward pedal load of 20-25 lbs is to be used on all 1986 Caprice wagons equipped with the powermaster
brake system to prevent overadjustment of switches.