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.
Overhaul - A-604/41TE & 41AE: Operation
When gearshift is in "OD" (overdrive) position, transaxle will shift through all 4 speeds with torque converter lock-up in overdrive. When gearshift is in "3" position, transaxle uses only 1st, 2nd and 3rd gears with 2nd-to-3rd gear shift delayed until vehicle speed is at least 40 MPH. When operating with gearshift in "3" position, torque converter lock-up occurs in 3rd gear for improved transaxle cooling. If engine coolant temperature becomes excessively warm, torque converter lock-up will occur in 2nd gear. When gearshift is in "L" position, engine braking is provided for descending grades.
Transaxle Control Module (TCM) contains a self-diagnostic system which stores a diagnostic trouble code if a transaxle problem exists. Diagnostic trouble code can be retrieved to determine the transaxle problem area. For information on electronic transaxle components, see the AUTO TRANS DIAGNOSIS - 41TE & 41AE article in this section.
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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.