Get the codes first ,as it can be your linkages under the car that is loose from your gear-stick to your gearbox.or it can just be a need for a fluid change .
SOURCE: hyundai excel 1996 automatic will engage reverse
It appears you have a Forward Clutch FAILURE. Replace the trans after you get it diagnosed and verified by a professional technician. By the way, do you have a Check Engine light? If so, what is the diagnostic code? The dealership can scan the system and find any codes which may have been stored in the TCM (Transmission Control Module). If there were any 'Incorrect Gear Ratio" codes, it's most probably the trans itself.
SOURCE: '03 Kia Sedona EX - ONLY Error Code - Clogged
Most "common" cause is and engine misfire that causes unburned fuel to enter the converter and overheat/melt the catalyst. The converter is covered by 8yr/80,000 mile warranty for defects, and may be covered thru Kia. On a positive note we have a 2005 sedona shuttle van a work with 250,000 miles on it and qoing strong.
SOURCE: 03 Alero won't shift to 3rd gear
sorry but time to visit the transmission shop. the only thing you could try first is Lukas Transmission oil sold at parts stores one quart only. make sure you get the oil for transmissions and not the crankcase.
SOURCE: My '99 Silverado 1500 Z71 has been an awesome
No reverse, here are few things you can try before needing to take it to a tranny shop. The 4l60e trans is a fully electronic trans. And being so the problem could be as simle as the reverse shift solenoid has shortted out. Along that same line the reverse valve could be stuck and or the little screen that is attatched to the mid plat could be clogged and in order fix this problemyou need to drop out the valve boby and for the most part rebuild the reverse circute.
Now for the hard stuff. Other problems you could look at.
imput housing assembly - 3-4 apply ring stuck in applied position.
- forward clutch not releasing
- turbine shaft seals missing,cut or damaged.
manual linkage - not adjusted
oil pump assembly - retainer and ball assembly missing or damaged.
- stator shaft seal rings or ring grooves damaged.
- stator shaft sleeve scored or damaged.
- revers boost valve stuck, damaged or misassembled.
- cup plug missing.
- restricted oil passage.
- faces not flat.
- converter clutch apply valve stuck.
valve body assembly - 2-3 shift valve stuck.
- manual linkage not adjusted.
- spacer plate and gaskets incorrect, misposition or damaged.
reverse input clutch - clutch plate worn.
- reverse input houeing and drum assembly cracked at weld.
- clutch plate retaining ring out of groove.
- return spring asembly retaining ring out of groove.
- piston deformed or dished.
- seals cut or damaged.
- retainer and ball assembly not sealing.
- restricted apply passage.
lo and reverse clutch - clutch plates worn.
- clutch plate retaining ring mispositioned.
- porosity in piston.
- seals damaged.
- return spring assembly retaining ring mispositioned.
- restricted apply passage.
case - cover plate gasket missing or damaged.
- cover plate not torgued correctly.
- porosity.
now thhis came from my 4l60 service book.
hope this helps
Thank you for using fixya and be safe
SOURCE: my reverse gear wont work
try to change the oil and filter in the transmission, if you still have no reverse , replace the transmission
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