Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Chevy S10 - GMC S15 and Sonoma Transmission Problems



  • rdystgordystgo Posts: 9
    :mad: ok guys how about a real helpful answer i took the tranny out of my s10 and went to putt a knew front pump in it . i took the tranny stud it up in a 5 gallon bucket removed the front pump bolts a tried to pull the pump out however the pump wont move at all i tapped it with rubber hammers even a ball pen hammer the freakin thing wont move a inch what the heck is the problem?
  • gonogogonogo Posts: 879
    Front pumps usually have some of the top holes tapped for a slide hammer. The ones I ran into that did not I tapped.
  • rdystgordystgo Posts: 9
    yes this tranny does not have the threaded bolt holes for the slap hammer. im not your average dumb [non-permissible content removed]! i just dont do automatic transmission work nor do i work on junk like Chevy's was hoping someone would reply that had this problem before and tell me what they did to get it out. thanks anyway :mad:
  • gonogogonogo Posts: 879
    I do transmission work and I know how to get them apart, good luck pal.
  • rdystgordystgo Posts: 9
    im not trying to be a dick just looking for some help i work on german cars and my 8 second mustang i hate chevys if it wasnt my old ladies i would not be workin on if you know what the problem is why dont you tell me the fix? tranny man
  • gonogogonogo Posts: 879
    You did not do what I told you the first time, so go here.

    With your attitude you should not even be working on it. Transmission work take a patient cool head, you have neither.
  • cjvo77cjvo77 Posts: 1
    I have a 1998 sonoma, 4 cylinder, 5 speed manual with a very loose shifter to where I bang my knuckles on the dash when I shift to third gear. any suggestions - this started about six months ago, also backup lights don't work - bulbs OK
  • rdystgordystgo Posts: 9
    i dont have a attitude i just want some answers i have a puller and it wont pull it out thats what i am saying. Your not telling me anything i dont know already. i wanted to know if thare is something that is holding the pump in that alldata is not showing me.i work on fifty thousand dollar cars all day. i have a cool head and patients. just want answers. tranny man thanks craig
  • gonogogonogo Posts: 879
    Well if you work on $50K cars all day you sure don't need my help. Pull the pan and see what maybe holding the pump from coming out.
    You work on German stuff I assume, over engineered and over priced. I worked on Setra Motor Coaches, what a junk.
  • last week when i was backing out of a parking space i heard a loud clunk and all of a sudden i had no reverse. i put it back in park and tried again and nothing in reverse just the motor reving i pusshed it out of the stall and put it in drive it moved in first but revvs reall high until it gains enough speed to get into third . ive tried to put it in second but it just stays in first and it wont go into overdive either .check the fluid and its still red and doesnt smell burnt and th check engine light is not on .any advise?
  • gonogogonogo Posts: 879
    Sorry, sun shell broken, common failure. Transmission needs to come out and apart to replace sun shell. If high time probably time for overhaul.
  • Help! My son's '93 S10 with auto and 4.3liter is loosing major trans fluid and we cannot find where. Just recently lost 4 quarts in just 30 miles. It will do this off and on. You can drive it for days and not loose any, then all of a sudden, the whole bottom of the truck is coated. It does not leak when stopped and cold. Only seems to be once it is really warmed up and driving higher speeds. It is not foaming and is not coming out the filler tube. I removed the cover under the torque converter and it appears mostly dry around the converter and front seal. The top of the trans is dry and I checked the plastic vent hole on top and appears to be clear. It is also dry around the cooling lines. The fluid covers the entire bottom of the truck even coating the engine oil pan, all down the sides of the truck and all back along the exhaust and drive shaft. However, when you stop to look underneath, nothing is pouring out. Is is possible that it is building up so much pressure that it literally shoots out of the pan gasket and seals? If so, what would cause this? Any suggestions are appreciated before I need to take it to a tranny shop.
  • rdystgordystgo Posts: 9
    put the truck on jack stands at four corners make sure it is secure so you can crawl around start the truck get it up to operating temp and then load it in gear and see where its coming from. if its on the oil pan check the cooler lines on the side of the pan they have a tendinse to rub and leak right thare. but it sound like you have a biger problem than that.
  • hoodlatchhoodlatch Mid-westPosts: 255
    I've heard in some extreme cases, the vacuum modulator can get bad enough to allow fluid to be drafted up the vacuum hose. But in those cases it was being sucked into the intake manifold. Just the same check out your modulator and see if the vacuum hose shows signs of fluid.

    I would think the leak is forward of the transmission because of the fluid on the oil pan. Good luck. :)
  • stev358stev358 Posts: 3
    hi was just wondering if someone could help me out i have a 1988 chevy s10 4 cyl. 151 would like to find out if i could replace the trans with a 93 s10 173 .i know the trans mount is different but dont know a freinds got the 93 and said i could have it
  • stev358stev358 Posts: 3
    hi just wondering if any one could tell me if a 88 s 10 4 cyl. 151 standard trans will inter change with a 93 s10 standard? about all i know is the trans mount is differnt so help please
  • Ok so i have heard that the 2WD 5 speed trans always has a problem with the 2nd gear sincro if you race shift the trans. Both my friend with a 4 cyl 2wd 5 speed and myself with a 4.3 2wd 5 speed have that same problem. Just so everyone knows these transmissions suck for racing.
  • Well after checking everything including flushing and checking the cooling lines, new filter and gasket, etc., it is definitely the front seal area. I got it warmed up to the point where fluid was coming out, put it on blocks and could easily see it was all over the front seal/torque converter area. With the miles on the truck (156K), I am taking it in to have new seals and if bad pump or converter will have that done also. Found local reputable trans mechanic who will do seal job for $275. I will keep you posted on what he finds.
  • its a 93 s10 2.8 with a 5 speed and 1st thru 3rd gears are making a horrible noise like theres metal broke in the pan. i drive this truck 100 miles round trip a day. My question is could this be just low fluid and where the heck is the dipstick for the fluid. And what could be causing the noise of metal grinding thru those gears
  • flip69flip69 Posts: 1
    i have a 00 Z-R2 with the same problem, i was wandering what you found out about your clunk.
  • I have a similar problem...I own a 99 s-10 manual trans..
    when taking off from a stop light, pushing the clutch in and shifting into first then releasing the clutch and pressing the accelerator about the moment the clutch is released I hear a loud "CLUNK" and things work fine though now after a few weeks of hearing this, I noticed this occurring similarly after second gear. still drives and operates fine just that disturbing noise. Any thoughts?
  • I have an 02 S10 2.2L 5 speed manual trans. My truck has 130,000 miles on it. I am having some issues when down shifting. I'm changing the clutch, but haven't had any problems with the clutch. When I gear down, the transmission makes a, what sounds like a grinding sound, not only can you here it, but you can feel it in the stick. I've had two different dealership service departments drive the truck, and they feel there is definatly something wrong. ( Duhhh) But I'm just curious, does this sound like a sincro problem or something else?
  • Just bought a '93 sonoma 2.8 v6 and get grinding noise after shifting in gear 1 through 5. Is this a common problem? And if so, what could be the cause? I would appreciate any information anyone can give me. Thanks
  • arienarien Posts: 4
    My truck has begun "surging" between 40-50 mph. Feels like it's going in and out of overdrive. Mechanic does not know why. Trans fluid is fine. Any suggestions? Does not affect speedometer, and no engine codes.
  • How does the rear of the front driveshaft unhook----95 sonoma 4x4??
  • Sounds like a guy I know.
    1] There is no dipstick on any Manual Tranny in the last Century.
    2] I'll bet it's new tranny time.
    You can always cripple it over to a tranny shop to confirm.

    But that's why they have fill plugs on trannys, and change out the fluid every 30,000 at the max.

    All trannys produce shrapnel and all it's doing is mixing into all the bearings till they fall apart like rotten teeth.
  • Have you ever changed the oil in the tranny?

    If it's whining at all going through the gears, it's definitely low.

    Clunking can come from several points, but at the point you mentioned, I would guess the pilot bearing that is press fit at the crank shaft supporting the input shaft of tranny.

    This brass bushing or maybe a real bearing keeps the shaft centered and also is the main support for the clutch disc. The clutch disc if not perfectly centered will Chatter badly at first as it tries to center itself just as it's being clamped solid between the pressure plate and flywheel.

    You can test this yourself with someone holding in on the clutch pedal and with inspection cover off see if you can move disc up or sideways. It should not.

    Only cure is remove tranny.
    Good Luck
  • arienarien Posts: 4
    No reply to last message so I will try again. My truck has been "surging", feels like in and out of overdrive. Mostly b/w 40-50 mph, but now at other speeds. Had a diagnostic, trans is supposedly shifting fine. Told it was the TPS. It is sucking gas like crazy and is hesitating when I accel. HELP!! Any ideas?
  • 1996 Chevy S10 Regular Cab with 4.3 L V6 and 5 speed manual transmission. The truck has 78,000 miles and I just had the clutch, flywheel, clutch bearings and slave cylinder replaced. My question has to do with the manual gear shifter. Before it used to stay centered on 3rd and 4th gear when in neutral but after the clutch repair it just slops back and forth. I can’t seem to find a detailed schematic to see if a return spring was left off or what the problem might be. The mechanic said this was “normal” and didn’t see a problem. Any ideas on what could be causing this? Thanks for the assistance.
Sign In or Register to comment.