Engine Controls - Revised HO2S Component Location Table

71-65-35
CHEVROLET

Issued: 04/01/97

SMU-SECTION E - ENGINE CONTROLS

SUBJECT:
SERVICE MANUAL UPDATE - SECTION 6E - ENGINE CONTROLS REVISED HO2S REFERENCES IN COMPONENT LOCATION TABLE

MODELS:
1997 CHEVROLET AND GMC M/L MODELS WITH 4.3L ENGINE (VIN W - RPO L35)

THIS BULLETIN IS BEING ISSUED TO REVISE THE HO2S LOCATIONS FOUND ON PAGE 6E-34 IN THE 1997 M/L VAN SERVICE MANUAL, BOOK 2 OF 2. THE REVISED HO2S LOCATIONS ARE AS F9LLOWS:

BANK 1 SENSOR 1 - LEFT FRONT EXHAUST Y-PIPE
BANK 2 SENSOR 1 - RIGHT FRONT EXHAUST Y-PIPE
BANK 1 SENSOR 2 - JUST FORWARD OF THE THREE WAY CATALYTIC CONVERTER
BANK 1 SENSOR 3 - EXHAUST PIPE BETWEEN THE THREE WAY CATALYTIC
CONVERTER AND MUFFLER