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The MIL is ON, and False DTC 32 is Set

90chevy13
Number: 90-207-6E

Section: 6E

Date: April 1990

Corp. Bulletin No.: 036505
Subject: SERVICE ENGINE SOON LIGHT FALSE CODE 32


Model and Year: 1990 C1 (SS ONLY) TRUCK WITH 7.4L (VIN CODE N) ENGINE
Owners of some 1990 Chevrolet "SS" trucks with 7.4L TBI engine may experience a false "Service Engine Soon" light.

This condition may be the result of the engine calibration.

If Code 32 (EGR diagnostic) cannot be repaired using normal service procedures, a revised calibration PROM should be installed.

New PROM Broadcast Scan
Transmission Kit Number Code Tool I.D.

Automatic 16151508 AUMU 1281

Part is currently available from GMSPO.

Use Labor Operation # T0500. Use Labor Time of .6 hr.
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