Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Fuel Supply Line: All Technical Service Bulletins
Engine - No Start After Extended Storage
GMC NUMBER:
90-6C-89
GROUP:
6C ENGINE FUEL
DATE:
SEPTEMBER, 1990
CORPORATE
NUMBER:
066302
SUBJECT:
ENGINE WILL NOT START AFTER EXTENDED STORAGE
MODELS:
ALL 1985-90 LIGHT TRUCKS WITH THROTTLE BODY FUEL INJECTION AND 2.5L, 2.8L, 4.3L, 5.OL, 5.7L, OR 7.4L
ENGINES
Some 1985-90 light trucks equipped with throttle body injection (TBI) engines (see list below) may experience a condition where fuel delivery to the
engine is interrupted causing a no start. This condition may be caused by deterioration of the in-tank fuel pump coupler hose located between the sending
unit assembly and the fuel pump. The deterioration is caused by prolonged high ambient temperatures in combination with low fuel volumes (or stale
fuel) and extended vehicle storage.
