V 2500 P/U 4WD V8-350 5.7L (1987)
Distributor: Customer Interest
Engine - Rough/Surges/Misfires/Code 43
GMC NUMBER:
88-T-203
GROUP:
6D - Engine Electrical
DATE:
March, 1989
CORPORATE
NUMBER:
936504
SUBJECT:
ENGINE ROUGH, SURGE, MISFIRE, CODE 43
MODELS:
1987-88 TRUCKS W/5.0L, 5.7L OR 7.4L (VIN CODE H, K, AND N) ENGINES
THIS BULLETIN IS BEING REVISED TO INCLUDE SYMPTOMS OF SURGE, MISFIRE, AND/OR CODE 43 AND CANCELS AND
SUPERSEDES GMC TRUCK SERVICE BULLETIN 88-T-30, ALL COPIES OF WHICH SHOULD BE DESTROYED.
Some vehicles equipped with 5.0L, 5.7L and 7.4L engines built with distributor, P/N 1103698, may exhibit a rough running engine condition, surge,
misfire and/or Code 43. This condition may be the result of oil ascending the distributor shaft and accumulating inside the distributor cap. If off is found
inside of the distributor cap, wipe the distributor cap, module and distributor base clean with a soft cloth and replace the distributor mainshaft assembly
with P/N 10467353 per service procedures in Section 6D4 of the appropriate Service Manual.
Parts are currently available from GMSPO.
For vehicles under warranty, use Labor Operations and Times as follows:
J4480 (5.0, 5.7) - C/K - .6 Hr G/P - .7 Hr R/V - .7 Hr
(7.4) - All - .6 Hr
