C 2500 Truck 2WD V8-379 6.2L DSL VIN J FI (1992)
Throttle Position Sensor: Technical Service Bulletins
Fuel Injection/TPS - Revised Adjustment/Diagnosis
Number: 93-248-6C
Section: 6C
Date: JUNE 1993
Corporate Bulletin No.: 366401
ASE No.: A1, A8
Subject:
FUEL INJECTION ADJUSTMENT PROCEDURE REVISED
Model and Year:
1991-93 C/K, R/V, G, AND P TRUCKS
SERVICE UPDATE
The following represents new and/or revised information for Section 6C2 in the 1991-93 C/K, R/V, G, and P service manuals.
THROTTLE POSITION SENSOR DIAGNOSIS:
To identify Diagnostic Trouble Codes 21, 22, and 23 for the throttle position sensor, refer to "Throttle Position Sensor Diagnostic Trouble Codes." For
diagnosis of the listed Diagnostic Trouble Codes, refer to SECTION 6E2 of the vehicle service manual. If it's diagnosed that the throttle position sensor
needs adjustment, follow the adjusting procedure as follows:
THROTTLE POSITION SENSOR (TPS) ADJUSTMENT:
IMPORTANT:
* There are two throttle position sensors used for the models indicated in this SMU. Refer to the "Throttle Position Sensor Data" chart to make sure
the proper throttle position sensor settings are followed.
Tools Required:
J 33043-2 TP Sensor Gage Block Set
J 39200 Digital Multimeter (or equivalent).
ADJUST:
1.
Remove the air cleaner and related hoses. Refer to SECTION 6C.
