LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1993 >> Forward Control 7.4 N >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis - 4L60-E >> Diagnostic Code Charts (Light Trucks & Vans) >> Code 58, Trans Fluid Temp. Sens CKT (High Temp. Indicated) >> Diagnostic Aids

Diagnostic Aids

Check harness routing for a potential short to ground in circuit No. 1227. Scan tester displays transmission fluid temperature in degrees Centigrade. After transmission is running, the temperature display should rise steadily to about 100°C then stabilize. Test the transmission sensor at various temperature levels to determine if sensor is out of calibration. See TRANSMISSION SENSOR - TEMP TO RESISTANCE chart. An out-of-calibration sensor could result in delayed shifts or TCC enabled complaint.

Fig 1: Code 58, Schematic, Trans. Fluid Temp. Sensor - Hi Temp. Indicated
G93J76306Courtesy of GENERAL MOTORS CORP.
Fig 2: Code 58, Flowchart, Trans. Fluid Temp. Sensor - Hi Temp. Indicated
G93A76307Courtesy of GENERAL MOTORS CORP.
scientia non olet · About LEMON Manuals