Linear EGR - Installation Procedure Revision

FILE IN SECTION: 6E - Engine Fuel & Emission

BULLETIN NO.: 51-65-32

DATE: May, 1995

SUBJECT:
Section 6E3, 9, 9C, 9A - Driveability and Emissions - Revised Linear EGR installation Procedure

MODELS:
1992-95 Chevrolet and GMC Truck M/L Vans
1992-95 Chevrolet and GMC Truck S/T Models
1993-95 Chevrolet and GMC Truck C/K Models
1994-95 Chevrolet and GMC Truck G Vans
1994-95 Chevrolet and GMC Truck P3, P/G Chassis
1992-93 Oldsmobile Bravada
with 4.3L, 7.4L Engines (VINs W, N - RPOs L35, L19)
and (VIN Z - RPO LB4 - with California Emissions)

This service bulletin revises the Linear EGR installation Procedure, in the following service manuals:

1992-93 Oldsmobile Bravada Service Manual, page 6E3-C7-6.

1992-93 Light Duty Truck, Fuel and Emissions Service Manual, pages 9-19 and 90-6.

1994-95 S/T Driveability Emissions and Electrical Diagnosis Service Manual and the 1994 S/T Truck Supplement with RPO CTF, page 9A-8.

1994-95 C/K, M/L, G Van and P/G and P3 Chassis Driveability Emissions and Electrical Diagnosis Service Manuals, page 9A-6.

The revised procedure is as follows:

Install or Connect

1. EGR valve and new gasket.

2. Valve to flange bolts.

Tighten

Tighten bolts in two steps.

a. The first step to 10 Nm (89 lb.in.).

b. The second step to 25 Nm (18 lb.ft.).

3. Electrical connector.