had trans service and adjusted nearly two years ago; replace filter and check general condition about 60 days ago. think we added too much fluid. now, it appears to be slipping when changing from 1st to 2nd. my model is 2 wd with automatic. i smell fluid, should remove, empty, replace new gasket and refill properly?
2007-01-15 16:22:31 · 6 answers · asked by lee_c_92262 1 in Cars & Transportation ➔ Car Makes ➔ Chevrolet
Get a vacuum bulb ,attach a long vacuum line and suck a little oil out til it is the right level.Check all vacuum lines in engine compartment for a no crack condition.Repair if necessary.This might correct the whole problem.
2007-01-15 16:38:56 · answer #1 · answered by (A) 7 · 1⤊ 1⤋
I own a transmission shop, and being overfull is not good on these transmissions. You smell fluid because it is kicking it back out the vent. One suggestion is to pump it back out the fill tube with a hand pump. You can purchase one at the parts store for moving fluid for about $10-$15. Make sure it is hot, on level surface, and in park when you check it. Also; look at the dip stick, and you will see the reading on the stick will be higher on one side than the other. Go by the lowest side on the stick. This is because when you take the stick out it drags the fluid up the fill tube, thus you get a high on one side of the stick and a low on the other. Just go by the low side, and you will be fine. Notice the color of the fluid, as in sometimes the cooler in the radiator will go bad, and dump coolant into the transmission, and cause this problem. If the fluid is a milky color, then you got big problems. It will ruin the transmission. The key here is the fact it is now slipping. What did it look like in the bottom of the pan when it was removed? Was there a lot of black stuff in the bottom of the pan? If so, this is clutch facings, and means you would have been better off to not have put new fluid in it. Transmission fluid is a very high detergent, meaning it cleans the inside of the transmission. The clutch facings are paper thin, and when they get worn they will slip if you clean the transmission out. This just means the transmission was getting ready to go out, and the new fluid helped it along by freeing up more space between the clutches and the steels, thus causing it to start slipping. If it was overfilled it shouldn't hurt it, make it slip, or cause the problem you are now having, unless it was severly over filled. Removing the fluid may not help your problem. The TV cable that goes up to the throttle body controls the line pressure, and if there is not enough line pressure it will make it slip. You might have it adjusted, and it could help. If you get the fluid level correct, the cable adjusted properly, and it still has the slip, then it will have to be rebuilt. I know this is not what you wanted to hear, but this is probably the case. Most people don't know the transmission will start slipping when you change the fluid, and think something else is the culprit, but this is not the case. It doesn't do it on all transmissions, but just the one's with a lot of miles on them. Putting an additive in the transmission will free up the valves inside the valve body, and help the shift. There is some stuff called Lube-Gard in the white bottle. Get a bottle of this when you get it pumped out, it may or may not help the problem. It is rather expensive, but does wonders for lazy shifts in a tranny.
Glad to help you, Good Luck!!!
2007-01-16 07:04:28 · answer #2 · answered by Anonymous · 1⤊ 2⤋
Too much fluid can cause too much pressure which can cause slippage. I'd get rid of the excess fluid. Don't know which trans you have in there because you didn't say what year your Blazer was but I've read in some of the blazer forums about people having the same problem on the 4L60E (most blazers have this trans). If that doesn't do it check to see if you have a P1870 code in the computer. 4L60E's are infamous for a 1-2 slip caused by a worn TCC regulator bore in the valve body. You can purchase a kit and bore the valve body without taking out the whole trans or you can get a new valve body (expensive--about $500). These guys have the kit. I've done two of these of my own.
http://www.transmissioncenter.net/4L60E.htm
To whoever gave me the thumbs down, you need to read Gm service bulletin # 01-07-30-023B or ATSG Bulletin #00-41 because you are the one who doesn't know what you are talking about .
2007-01-16 01:06:03 · answer #3 · answered by Carman 3 · 0⤊ 2⤋
You can adjust the level of fluid, but i doubt this will fix anything except mabe a fluid leak from the vent.its probably ready for a overhaul judging from experience with 4L60-E trans in blazers.
2007-01-17 19:36:58 · answer #4 · answered by deltech 4 · 0⤊ 0⤋
The first thing I'd do, is check the dipstick on the tranny. If it is too high, let some of the fluid out. If it is OK, go to your local automotive supplies store (even walmart and some gas stations will work) and they sell additive that you can put in your transmission that helps it shift better. If that still doesn't help, take it back to the shop where it was done and explain your problem to them.
2007-01-16 00:32:52 · answer #5 · answered by Mebe 1 · 1⤊ 1⤋
sounds like it's toast....had to rebuild mine at 98,000 miles
2007-01-16 08:46:58 · answer #6 · answered by Anonymous · 0⤊ 1⤋