S15/T15 Jimmy 2WD L4-119 1.9L VIN A 2-BBL (1983)
Ignition Control Module: Technical Service Bulletins
HEI Module - Testing Update
Number:
83-I-74
Section:
VIt
Date:
May, 1983
METAL OUTLET
Subject:
HEI MODULE TESTING
TO:
ALL CHEVROLET DEALERS
Known good HEI modules and new modules from service stock may fail a test using the HEI tester, J-24642, if the tester ground is improperly
connected. When using the tester, connect or contact the alligator clip for the tester ground directly to the flat metal surface on the bottom of the HEI
module (see illustrations). The metal eyelet on the module is not always in contact with the metal ground surface on the bottom on the module and,
therefore, should not be used when testing the module.
