DTC 45 (Rich Exhaust) Diagnostic Chart Revision

File In Section: 6E - Engine Fuel & Emission

Bulletin No.: 41-65-28

Date: October, 1994

SUBJECT:
Section 3A - DTC 45 Rich Exhaust - Will Set When (Value Change)

MODELS:
1994-95 Chevrolet and GMC Truck C/K, P Models, G Vans
with 5.0L Engine (VIN H - RPO LO3)
5.7L Engine (VIN K - RP0 LOS) - for 1994 under 8500 GVW
7.4L Engine (VIN N - RPO L19)

This bulletin contains revisions to DTC 45 chart pages in the 1994-1995 G, C/K, P Truck "Driveability, Emissions and Electrical Diagnosis" manual as follows:





K Series - 4 Wheel Drive





C Series - 2 Wheel Drive

1994-1995 C/K TRUCK 3A-72





1994 G VAN 3A-7O





1995 G VAN 3A-72





1994 P TRUCK 3A-66





1995 P TRUCK 3A-68

Change these steps on facing page: "DTC 45 Will Set When:"

1st bullet:

^ Remains above 750 mV for 61-71 seconds and in "Closed Loop."

3rd bullet:

^ Throttle angle is greater than 5%.