Grand AM L4-138 2.3L VIN A FI HP (1989)
Engine Control Module: Technical Service Bulletins
Engine Controls - Revised Code 26 & Chart C-8D
Bulletin Number:
89-6-49
Reference Number:
916516
Publish Date:
6/89
SERVICE MANUAL UPDATE - SECTION
Subject:
6E3 - DRIVEABILITY AND EMISSIONS REVISED CODE 26/ADD CHART C-8D 2.3L (VIN D)
Models
Affected:
1988-89 GRAND AM
This bulletin serves to update Code 26 (Page 2 of 3) Facing Page "Diagnostic Aids" and to add Chart C-8D Facing Page and Chart in Section 6E3
"Driveability And Emissions" of the 1988 and 1989 Service Manuals with 2.3L Grand Am (VIN D) applications.
CODE 26
(Page 2 of 3)
QUAD-DRIVER (QDM) CIRCUIT 2.3L (VIN D) "N" SERIES (PORT)
Diagnostic Aids:
Intermittent open or ground in controlled circuit will cause Code 26 if present continuously for 20 seconds or longer. Intermittent Code 26 may be
caused by an improperly functioning second or third gear switch. Refer to CHART C-8D for proper gear switch operation.