It for sure cannot hurt and may very well help. Have the fluid and filter changed, and see where you stand then.
Low Transmission fluid
Try changing your PCV valve it messes with the idle control. and shifting prob is likely in tranny and may not be related at all. try PCV valve and have your tranny serviced.
The shifting issue in your 1992 Chevy G30 could be due to low transmission fluid, a failing transmission control module, or internal transmission problems. The feeling of slipping into neutral when up to speed suggests possible transmission wear or a problem with the torque converter. The ABS brake light could indicate a malfunction in the braking system, potentially related to the wheel speed sensors or the ABS module. It's advisable to have both the transmission and ABS systems inspected by a qualified mechanic.
Depends if you have a manual or automatic. Manual transmission, no, there is no transmission computer. For an automatic transmission, the engine computer and transmission computer are one unit typically called an ECM, Engine control module. There are many different names for and ECM. Ford started using computer controlled transmissions in the early 90's and late 80's.
Older automatic transmissions had clutch "bands" that were adjustable when the transmission started to wear. Modern automatic transmissions do not have that option, but then, they tend to last a lot longer to make up for it.
The first fully automatic transmission was introduced by Oldsmobile in their 1939 model year. It was called the Hydra-matic.
I owned a 1993 Chrysler minivan which got stock in 2nd gear at 79,000 miles . This happened after I noticed it started to drop in to second gear unexpected. Turns out that in my case, it was the beginning of an automatic transmission failure (sorry). The dealer explained to that when Chrysler transmissions start to fail, they don't usually stop working - -just stop working correctly meaning not shifting into higher gears. One thing you might want to check is to see if the transmission fluid is OK . If it is low this might be why it is not shifting correctly. Wish I had a more promising answer! The transmission computer will store a code for the failure it detected.
The fluid level in an automatic transmission in a 1995 Dodge Truck should be checked at idle in Neutral with the engine at operating temperature.The fluid level in an automatic transmission in a 1995 Dodge Truck should be checked at idle in Neutral with the engine at operating temperature.
If it is an automatic transmission, make sure the car is started if it is in Park or Neutral, and press the brake pedal in as far as it can go. If the car is stuck in a gear other than neutral or park, DO NOT START IT. It will damage your engine and your transmission. Call a tow truck. If it is a manual, press in the break pedal and the clutch pedal fully, and try to put it in gear. If it doesn't go, then put it in neutral, release the clutch, press in the clutch again, and try to put it in gear. If none of this works, have your transmission serviced.
If you didn't use dexron III transmission fluid, this may indicate the reason for the flashing light. Another reason is either too much or too little fluid. My best advice is to take the car to a transmission specialist. Really, changing the transmission fluid in a Daewoo is not something that should be attempted by anyone but a specialist.
To prevent the engine from being started while the transmission is any gear other than park or neutral.
You have a high line pressure problem with the 1 and 2 shift slonoids. IT may be in the valve body. stop driving or severe damage will acure in the transmission. Take to trans shop ASAP.