1995 Cadillac Seville SLSFACTORY OEM SERVICE PROCEDURE

Automatic Transmissions DTCS

AUTOMATIC TRANSMISSIONS DTCS

OEM Code Description
16 SYSTEM VOLTAGE OUT OF RANGE
21 THROTTLE POSITION SENSOR SIGNAL VOLTAGE HIGH
22 THROTTLE POSITION SENSOR SIGNAL VOLTAGE LOW
24 VEHICLE SPEED SENSOR
28 ILLEGAL TRANSAXLE RANGE SWITCH INPUT
29 TRANSAXLE SHIFT PROBLEM SHIFT "B" SOLENOID
39 TCC NOT ENGAGING
56 TURBINE SHAFT SPEED SENSOR
57 TRANS. TEMPERATURE SENSOR HIGH TEMPERATURE
59 TRANS. TEMPERATURE SENSOR LOW TEMPERATURE
75 INTERMITTENT VSS SIGNAL
76 TRANSAXLE PRESSURE CONTROL SOLENOID
86 UNDEFINED TRANS. GEAR RATIO
88 TCC NOT DISENGAGED
89 EXTENDED SHIFT
91 PARK/NEUTRAL SWITCH
94 TRANS SHIFT SOLENOID "A" RATIO PROBLEM
96 TORQUE CONVERTER OVERSTRESS
117 SHIFT SOLENOID "A" OR "B" OPEN OR SHORTED
P016 SYSTEM VOLTAGE OUT OF RANGE
P021 SHORTED THROTTLE POSITION (TP) SENSOR CIRCUIT (SIGNAL VOLTAGE HIGH)
P022 OPEN THROTTLE POSITION (TP) SENSOR CIRCUIT SIGNAL VOLTAGE LOW)
P024 VEHICLE SPEED SENSOR (VSS) CIRCUIT PROBLEM
P028 TRANSAXLE PRESSURE SWITCH/CIRCUIT PROBLEM
P029 TRANSAXLE SHIFT SOLENOID "B" PROBLEM
P039 TORQUE CONVERTER CLUTCH (TCC) ENGAGEMENT PROBLEM
P056 TRANSAXLE INPUT SPEED SENSOR CIRCUIT PROBLEM
P057 SHORTED TRANSAXLE TEMPERATURE SENSOR CIRCUIT
P059 OPEN TRANSAXLE TEMPERATURE SENSOR CIRCUIT
P075 VSS SIGNAL INTERRUPT
P076 TRANSAXLE PRESSURE CONTROL SOLENOID CIRCUIT
P086 UNDEFINED GEAR RATIO
P088 TCC NOT DISENGAGING
P089 LONG SHIFT & MAXIMUM ADAPT
P091 TRANSAXLE RANGE SWITCH PROBLEM
P094 TRANSAXLE SHIFT SOLENOID "A" PROBLEM
P096 TORQUE CONVERTER OVERSTRESSED
P117 SHORTED/OPEN SHIFT SOLENOIDS "A" & "B" CIRCUIT
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.