G 10 1/2 Ton Van V8-305 5.0L VIN H 4-bbl (1984)
Manifold Pressure/Vacuum Sensor: Technical Service Bulletins
MAP - Revised Check Chart for DTC's 33, 34, 63, 64
Number:
90-199-6E
Section:
6E
Date:
March 1990
Corporate Bulletin No.: 016510
Subject:
REVISED CHART C-1D, CODE 33, 34, 63, 64
Model and Year:
1980-90 PASSENGER CARS AND TRUCKS
TO:
ALL CHEVROLET DEALERS
This bulletin revises the Manifold Absolute Pressure (MAP) Output Check Chart C-1D and updates Code 33, Code 34, Code 63, and Code 64 in the
Service Manual section on "Driveability And Emissions" (Section 6E1, 6E2, and 6E3). This information applies to all MAP Sensors on 1980-1990
vehicles with gasoline engines (except turbocharged) with green (standard) MAP sensor electrical connector insert or the solid black MAP sensor
electrical connector insert.
The revised chart information:
