WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
6–18 Copyright © 1998 General Motors Corp.
DIAGNOSTIC CODES
C. Diagnostic Code Schematics
The diagnostic code schematics in this section show wiring for both the optional oil level sensor and
retarder, where applicable. If your transmission is not equipped with an oil level sensor or retarder,
disregard the portions of the schematic pertaining to those optional pieces of equipment. Refer to the
appropriate transmission Service Manual for solenoid replacement procedures.
D. Diagnostic Code 13 and 35 Schematics
The shaded area in Code 13 and 35 schematics indicates a change in the wiring harness incorporated
in transmissions manufactured before September 1993.
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