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.
1996 Saturn SW1 AutomaticFACTORY OEM SERVICE PROCEDURE
Pcm Learn Mode
NOTE:
For specific adaptive information available using a scan tool, see Fig 1
.
- The PCM will change transaxle shift points depending on driving conditions or changes in engine performance. If the PCM memory or vehicle battery is disconnected, the PCM must relearn the current operating parameters.
- Perform the following procedure on a clear highway. Place mode select switch (located on center console) in NORMAL position. With transaxle at normal operating temperature, place gear selector in "D4" position. Open throttle about 30 percent. Perform 10 complete 1-2, 2-3 to 3-4 upshifts.
- While coasting at 35 MPH (DOHC engine) or 40 MPH (SOHC engine), open throttle halfway to create a 4-3 downshift. Repeat 5 times. Move gear selector to "D3" position. While coasting at 20 MPH (DOHC engine) or 30 MPH (SOHC engine), open throttle 75 percent to create a 3-2 downshift. Repeat 5 times.
Factory Service Tools
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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.