Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCADILLAC1996ELDORADO V8-4.6L VIN 9REPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLETESTING AND INSPECTIONPROGRAMMING AND RELEARNINGRESETTING TRANSAXLE ADAPTS
1996 Cadillac Eldorado V8-4.6L VIN 9
Resetting Transaxle Adapts
1996 Cadillac Eldorado V8-4.6L VIN 9SECTION Resetting Transaxle Adapts
RESETTING TRANSAXLE ADAPTS 4T80-E TRANSAXLE
The PCM maintains three types of transaxle adapt parameters which are used to modify transaxle line pressure under specific conditions. By modifying line pressure, the PCM maintains transaxle shift tolerance at a constant level, regardless of wear or variation of tolerance inside the transaxle. The three types of transaxle adapts are: garage shift adapt (controls Park to Drive or Reverse feel), upshift adapt (controls feel of 1/2, 2/3 and 3/4 upshifts) and steady state adapt (reduces slippage of clutches in all drive ranges).
1. Turn key On, enter diagnostics, then select PCM override PS13 (TP SENSOR LEARN).
2. Press Warmer button. CCDIC should display 09, indicating that garage shift adapt has been reset.
3. Select PCM override PS14 (TRAN ADAPT). Press cooler button. CCDIC should display 90, indicating upshift adapt value has been reset.
4. Press Warmer button. CCDIC should display 09, indicating steady state adapt value has been reset.
The PCM maintains three types of transaxle adapt parameters which are used to modify transaxle line pressure under specific conditions. By modifying line pressure, the PCM maintains transaxle shift tolerance at a constant level, regardless of wear or variation of tolerance inside the transaxle. The three types of transaxle adapts are: garage shift adapt (controls Park to Drive or Reverse feel), upshift adapt (controls feel of 1/2, 2/3 and 3/4 upshifts) and steady state adapt (reduces slippage of clutches in all drive ranges).
1. Turn key On, enter diagnostics, then select PCM override PS13 (TP SENSOR LEARN).
2. Press Warmer button. CCDIC should display 09, indicating that garage shift adapt has been reset.
3. Select PCM override PS14 (TRAN ADAPT). Press cooler button. CCDIC should display 90, indicating upshift adapt value has been reset.
4. Press Warmer button. CCDIC should display 09, indicating steady state adapt value has been reset.
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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.