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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > 4x4 Drivetrain

4x4 Drivetrain 4x4 Repairs & Problems

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  #1  
Old 05-22-2008, 09:55 PM
dkspence dkspence is offline
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will not reverse!

i have an '03 Envoy with about 135,000 miles and now when its shifted into reverse it will not move, it makes a whirring noise when in reverse, but it will work fine in the forward gears. any ideas what could be the problem? please help.
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  #2  
Old 05-25-2008, 01:44 PM
dkspence dkspence is offline
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any input anybody?
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  #3  
Old 05-25-2008, 04:35 PM
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SteveTB03 SteveTB03 is offline
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I'd have to say that you might need a new tranny or have you checked the fluid level? in my old car it did the same thing then i checked and the fluid was low and as soon as i added some new fluid it was good to go
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Old 05-25-2008, 05:07 PM
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the roadie the roadie is offline
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I agree. No reverse is a symptom of only two things. Low fluid or something broken. Only you know how often you've been giving your tranny any loving maintenance, and I didn't want to insult your intelligence to suggest that checking the fluid level is the absolute first thing to do. I sort of wish you'd started out your post by telling us that you checked the fluid level and when the last fluid change was.

But if you've never touched it in 135.000 miles, and I hope that's not the case, your vehicle is only giving back what it's been given and it's time to spend some money and get it to a shop before you lose forward gears and have to tow it.
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Old 05-26-2008, 08:01 AM
dkspence dkspence is offline
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transmission fluid and filter were just recently changed @ about 130,000 miles, fluid level is good. i was hoping i wouldnt have to replace the whole transmission.
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Old 05-26-2008, 08:11 AM
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canam canam is offline
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was that the first time you changed it ? my father inlaw had a car that he did not change the fluid till like 125000 miles week later trany took a crap!!
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Old 05-26-2008, 08:21 AM
dkspence dkspence is offline
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no that isnt the first time it was changed, about the fouth time fluid and filter has been changed.
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Old 05-26-2008, 11:30 AM
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the roadie the roadie is offline
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OK, so if it's not low fluid or neglect, nobody here could even begin to guess what's broken inside. All I think we can declare, with full certainty, is something inside is broken and you need a professional to look into it. Repair, replace, or rebuild.

Start with thinking about who changed the fluid and filter. Were they a competent, well-regarded transmission shop or a quickie-lube place? If a quickie-lube place, they might have put engine oil or grape soda in your tranny. I wouldn't rule out getting a sample of whatever's in there for analysis in case you have a case against them for idiocy.

If only you'd asked us about rough idle at 135,000 miles, combined with stalling when the A/C compressor kicks in. We do have a solution to that one (if you haven't done it already) - cleaning the throttle body. But transmission internals - you need a hands-on local professional.
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Old 07-03-2008, 08:46 PM
dkspence dkspence is offline
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ok now heres the problem. I dropped the transmission, tore it apart and found the teeth on the sunshell were pretty much gone, so i bought "the beast" sunshell, new sungear and rebuild kit. rebuilt everything taking special care i put everything back in, bolted the trans back up, but now it will not do anything but rev up in either reverse or drive gears! any ideas of what could be the problem?
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  #10  
Old 07-04-2008, 12:47 PM
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elementkidd elementkidd is offline
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Quote:
Originally Posted by the roadie View Post
OK, so if it's not low fluid or neglect, nobody here could even begin to guess what's broken inside. All I think we can declare, with full certainty, is something inside is broken and you need a professional to look into it. Repair, replace, or rebuild.

Start with thinking about who changed the fluid and filter. Were they a competent, well-regarded transmission shop or a quickie-lube place? If a quickie-lube place, they might have put engine oil or grape soda in your tranny. I wouldn't rule out getting a sample of whatever's in there for analysis in case you have a case against them for idiocy.

If only you'd asked us about rough idle at 135,000 miles, combined with stalling when the A/C compressor kicks in. We do have a solution to that one (if you haven't done it already) - cleaning the throttle body. But transmission internals - you need a hands-on local professional.


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