Question about 1998 Chevrolet S-10 Pickup
01 s10 2.2 auto.....going 55 all the sudden trans felt like it was in neutral, slowee down n caught gear, as long as I feathered gas it kept going , got home changed fluid and filter worked perfect for 75 feet then went all the way out again....changed fluid and fikter again n now it wont move, have it on jack stands rt now and if I just floor the gas tge wheels barely turn, this is in all gears by the way
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Posted on Jan 02, 2017
SOURCE: s10 blazer tansmission
You have a 4L60E whick is controled by your ECM. It sounds like you need and new transmission, the sun gear in it has failed and is the weak point on this transmission.
When you get a new transmission have them to a corvette servo upgrade. The part is only $45.00 and the shop should know about the upgrade. It will make your truck shift a lot more firmer but last longer.
Here is a write up http://s-series.org/component/option,com_tech_article/Itemid,/item,6/task,item/
Good luck and hope this helps
Posted on Apr 09, 2009
a chevy mechanic suspected shift cable was worn or damaged...mine will sometimes engage..and then wont engage at all even tho shifter moves freely....
Posted on Jun 19, 2009
SOURCE: Power Train - Automatic 2001 S10
Normally, you will need to check the trans fluid level first. once you have verified proper fluid level, you will need to check all linkages that connect the shift changer to the actual transmission. make sure the linkages are sound and, adjusted correctly. once that is done and, no abnormal issue were noticed, move on to the DTC.
Ok, Your vehicle is past the OBDI stage so, you will need a scan tool or, diagnstic tool for pulling the codes in this case. this veihicle is on OBDII status. Some shops will scan your codes for free. Autozone is one place that will give you the code number for free.
The most common issue here will be fualty control solenoid(shift). This will require you to drop the transmission pan to access and test. the solenoid is attahced to the valve body inside the pan. this is the most common proplem spot. have this solenoid replaced if all the above check points are ok.
Posted on Jul 19, 2009
Make sure you have the proper amount of tranny fluild in it and get that Valvoline fluid out of it. Allison transmissons have there own type of tranny fluid and you want to use it. You can buy the right stuff from a Allison dealer. Most Detroit Diesel dealers are also Allison dealers. Look them up in your phone book and they will tell you the quanity and sell you five gallon pails of the fluid. Just get the serial number off of the side of the transmisson before you call. Change the fliters again too. Believe me, this is important. My company has Yard horses with Allison transmissions and you don't want to screw with the small stuff. Service them right and they work as hard as you want.
Posted on Aug 09, 2009
Before guessing at transmission problems, check the fluid level (car warmed up, engine running in Park on level ground) and have the PCM scanned for trouble codes FIRST.
Secondly, put a line pressure gauge (or visit a local trans shop) on the pressure test port and go for a drive to verify proper line pressure. Base pressure at idle in P,N,OD should be around 70psi and around 140psi in R. Max line pressure should be at least 190psi at WOT in 1st or 2nd, 225psi is optimum. If base pressure is low, trans or pump is worn out. If max pressure is low, check EPC solenoid. If reverse is slow to engage, and line pressure does not come up to at least 130psi in reverse, replace the boost valve with a Transgo 0.500" boost valve (easy fix in pan).
Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the trans may help (must remove valvebody), or adding a high-viscosity additive such as Lucas Transmission additive or other seal restorer product. May also have worn boost valve (can replace in the pan).
Soft shifting, gradual performance degradation: Poor line pressure rise due to leaking boost valve, clogged EPC filter screen, failing EPC solenoid, or worst case: leaky seals throughout. Transgo HD2-C kit fixes first two without removing trans. Seal restorer may fix last problem, but probably R&R. Also try a transmission flush with BG brand products (Firestone stocks it).
No movement in any gear: pump failure, or total loss of fluid. R&R, or refill pan and find the leak. If out of fluid, avoid running the engine until the trans is refilled to avoid pump damage. To check for pump failure, check fluid level with the engine off, then start the engine and recheck fluid level. If level does not go down when engine is running, the pump is broken.
1-2 or 2-3 shift is slow/soft above part throttle: Trans is on its way out. R&R
Good luck and start with checking your transmission fluid level. Thank you for using Fixya
Posted on Mar 16, 2010
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