Fuel System - Injection Balance Test Procedure Revised

File In Section: 6E - Engine Fuel & Emission

Bulletin No.: 61-63-16

Date: February, 1997

SERVICE MANUAL UPDATE

Subject:
Section 6E - Engine Controls - Revised Injector Balance Test Procedure

Models:
1996-97 Chevrolet and GMC S/T, M/L, C/K, G, P Models
1996-97 Oldsmobile Bravada
with 4.3L, 5.0L, 5.7, 7.4L Engine
(VINs W, X, M, R, J - RPOs L35, LF6, L30, L31, L29)

X�N :

This bulletin is being issued to inform technicians of a revision to the Injector Balance Test. This revised procedure will help the technician to use the Injector Balance Test with greater clarity and accuracy. Please use this revised procedure of the Injector Balance Test for the following model years:

^ 1996-97 S/T Truck V-6

^ 1996-97 M/L Van V-6

^ 1996-97 G Van, V-6, V-8

^ 1996-97 C/K Truck, V-6, V-8

^ 1996-97 P Truck, V-6, V-8

Technicians diagnosing vehicles with misfire DTCs (P0300-P0308) must perform the Injector Coil Test and the Injector Balance Test prior to injector replacement.