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Contents

Section: Diagnosis - 4l60-e

APPLICATION & IDENTIFICATION

DESCRIPTION

TRANSMISSION CONTROLS

PCM

SENSORS & SWITCHES

Shift Solenoids 1-2 & 2-3

Pressure Control

TCC Solenoid

3-2 Control Solenoid

CLUTCH & BAND APPLICATION

SYMPTOM DIAGNOSIS

Incorrect Shift Pattern

Shift Quality

Engine Rough

Line Pressure Too High

Line Pressure Too Low

MIL Stuck On

Erratic Manual Downshift

Unwanted Downshift (Corvette Only)

Wrong Gear, No Shift Or Two Gears Only

Second Gear Start (Camaro & Firebird With V6 Engine Only)

3rd Gear Only

Delayed 3-4 Upshift & TCC Apply During Hard Acceleration

No 4th Gear Hot

No TCC Apply

TCC Apply Time Wrong

SELF-DIAGNOSTICS

Internal Harness Check Chart

Oil Pressure Switch Assembly

Transmission Fluid Temperature & Vehicle Speed Sensor

Torque Converter Clutch

SHIFT SPEED TEST

LINE PRESSURE TEST

ELECTRONIC SELF-DIAGNOSTICS

RETRIEVING CODES (WITH SCAN TESTER)

TROUBLE CODE DEFINITION

HARD OR INTERMITTENT TROUBLE CODE DETERMINATION

INTERMITTENT PROBLEM DIAGNOSIS

Intermittent Simulation

Intermittent Symptom Definition

Possible Cause & Correction

CLEARING TROUBLE CODES

CHART A-1 (CAMARO & FIREBIRD W/4.3L)

CHART A-1 (BROUGHAM, CAPRICE, CAMARO, CORVETTE, FIREBIRD & ROADMASTER W/5.7L)

CHART A-2 (BROUGHAM, CAPRICE, CAMARO, CORVETTE, FIREBIRD & ROADMASTER W/5.7L)

CHART A-1 - ("C", "G", "K", "L", "M", "S" & "T" W/GAS ENGINE)

CHART A-2 ("C", "G", "K", "L", "M", "S" & "T" W/GAS ENGINE)

Diagnostic Aids

CODE 22, THROTTLE POSITION SENSOR SIGNAL VOLTAGE LOW

Drive Circuit Test

CODE 58, TRANS. TEMPERATURE SENSOR HIGH TEMPERATURE - 3.4L "F" BODY, 4.3L & 5.7L

CODE 59, TRANS. TEMPERATURE SENSOR LOW TEMPERATURE - 3.4L "F" BODY, 4.3L & 5.7L "B", "D", "F" & "Y" BODIES

CODE 72, VEHICLE SPEED SENSOR LOSS - 3.4L "F" BODY, 4.3L & 5.7L "B", "D" & "F" BODIES

CODE 72, VEHICLE SPEED SENSOR LOSS - 5.7L "Y" BODY

CODE 75, TRANSMISSION VOLTAGE LOW - 4.3L & 5.7L

CODE 79, TRANSMISSION FLUID OVERTEMP - 3.4L "F" BODY, 4.3L & 5.7L

CODE 85, TCC STUCK ON - 4.3L & 5.7L

CODE 96, TRANSMISSION VOLTAGE LOW - 3.4L "F" BODY

CODE 97, VSS OUTPUT CIRCUIT - 4.3L & 5.7L

CODE 16, TRANSMISSION OUTPUT SPEED - 5.0L & 5.7L WITH 4L60E TRANSMISSION

CODE 21, TPS SIGNAL VOLTAGE HIGH

CODE 22, TPS SIGNAL VOLTAGE LOW

CODE 24, VEHICLE SPEED SIGNAL LOW

CODE 28, PRESSURE SWITCH MANIFOLD FAULT

CODE 58, TRANS FLUID TEMP. SENS CKT (HIGH TEMP. INDICATED)

CODE 59, TRANSMISSION FLUID TEMP. SENSOR CIRCUIT (LOW TEMP. INDICATED)

CODE 66, 3-2 CONTROL SOLENOID CIRCUIT FAULT

CODE 67, TCC SOLENOID CIRCUIT CHECK

CODE 68, OVERDRIVE RATIO ERROR

CODE 69, TORQUE CONVERTER CLUTCH STUCK ON

CODE 72, VSS CKT LOSS TRANSMISSION OUTPUT SIGNAL - DIESEL

CODE 73, FORCE MOTOR CURRENT (CURRENT ERROR)

CODE 81, 2-3 SHIFT SOLENOID CIRCUIT FAULT

CODE 82, 1-2 SHIFT SOLENOID CIRCUIT FAULT

BRAKE SIGNAL CIRCUIT CHECK

TORQUE CONVERTER CLUTCH (TCC) SOLENOID CIRCUIT CHECK

3-2 CONTROL SOLENOID CIRCUIT CHECK

1-2 SHIFT SOLENOID CIRCUIT CHECK

2-3 SHIFT SOLENOID CIRCUIT CHECK

PRESSURE CONTROL SOLENOID CIRCUIT CHECK

FLUID PRESSURE SWITCH ASSEMBLY CIRCUIT CHECK

VEHICLE SPEED SENSOR CHECK (2WD & AWD)

VEHICLE SPEED SENSOR CHECK (4WD)

All sections

Engine Rough Chevrolet Cutaway P30

Diagnosis - 4l60-e

Engine Rough

Check TP sensor.