S10/T10 P/U 2WD V6-262 4.3L (1988)
PROM - Programmable Read Only Memory: Customer Interest
Engine - Performance Problems
Number:
88-193-6E
Section:
6E
Date:
April, 1988
Subject:
INCREASED PERFORMANCE
Model and Year:
1988 S/T TRUCKS WITH 4.3L (VIN CODE Z) ENGINE AND CALIFORNIA EMISSIONS
TO:
ALL CHEVROLET DEALERS
Customer comments of lack of performance, poor tip-in response, or engine flatness may be received in connection with some early built S/T trucks with
a 4.3L engine and California emissions. A new prom was put into production that addresses these concerns. This new prom is now available for trucks
built before the following breakpoints:
172008
The new PROM, part number for the LB4 (4.3L) engine is listed below:
