PCM - DTC P039 Sets on Upgrade

File In Section: 6E - Engine Fuel & Emission

Bulletin No.: 87-65-17

Date: June, 1998

Subject:
DTC P039 Set when Driving Up Slight Grade After Cold Start
(Diagnose/Install New PCM)

Models:
1993-95 Cadillac Eldorado, Seville

1994-95 Cadillac Concours, DeVille
with 4.6L Engine (VIN Y - RPO LD8)

Condition

DTC code P039, [1][2]torque converter clutch engagement, may set when driving up a slight grade after a cold start.

Correction

A PCM calibration enhancement has been released for the above listed vehicles. If a vehicle is encountered with this condition, and all of the diagnostic procedures listed in the Service Manual have been performed, with no resulting correction, then update the vehicle with the applicable calibration listed.

Parts Information

Part Number Description

16266755 1993 PCM Prom
16266762 1994 PCM Prom
16266767 1995 PCM Prom

Parts are currently available from GMSPO.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation Description Labor Time

J6364 Prom, PCM - Use published labor
Replace operation time