Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSCHEVROLET1993ASTRO VAN M V6-262 4.3L VIN ZREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSEXHAUST GAS RECIRCULATIONTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSEGR SYSTEM CHECK CHART - REVISION
1993 Chevrolet Astro Van M V6-262 4.3L VIN Z
EGR System Check Chart - Revision
1993 Chevrolet Astro Van M V6-262 4.3L VIN ZSECTION EGR System Check Chart - Revision
File In Section: 6E - Engine Fuel & Emission
Bulletin No.: 51-65-17
Date: April, 1995
SERVICE MANUAL UPDATE
Subject:
Section 9A - Driveability and Emissions - Revised EGR System Check Chart
Models:
1993 Chevrolet and GMC Truck S, M, G, C/K Models with 2.5L, 4.3L, 5.0L, 5.7L Engines (VINs A, Z, E, H, K - RPOs L38, LB4, L03, LO5)

This bulletin advises of a chart revision to the 1993 Light Duty Truck Fuel and Emissions Service Manual, Page 9A-7, EGR SYSTEM CHECK.
Bulletin No.: 51-65-17
Date: April, 1995
SERVICE MANUAL UPDATE
Subject:
Section 9A - Driveability and Emissions - Revised EGR System Check Chart
Models:
1993 Chevrolet and GMC Truck S, M, G, C/K Models with 2.5L, 4.3L, 5.0L, 5.7L Engines (VINs A, Z, E, H, K - RPOs L38, LB4, L03, LO5)
This bulletin advises of a chart revision to the 1993 Light Duty Truck Fuel and Emissions Service Manual, Page 9A-7, EGR SYSTEM CHECK.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.