ECM - Revision Code 23
87chevy23Number: 88-103-6E
Section: 6E
Date: DEC., 1987
Subject: CAVALIER SHOP MANUAL REVISION
CODE 23
Model and Year: 1988 CAVALIER WITH
2.8L MPI ENGINE
TO: ALL CHEVROLET DEALERS
MANIFOLD AIR TEMPERATURE (MAT) SENSOR CIRCUIT:
The ECM cavities used for MAT input on page 6E3-A1-34 of the 1988 Service Manual should be changed. Circuit 472 is located at F16 (not C12) and circuit 452 is located at B5 (not D2).