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Noooo Not My Tranny!

burg226

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burg226 Enthusiast

burg226

Posted
Posted

So this morning i'm driving to work. Get on the highway and it won't shift into 4th gear. Pull over shut the truck off. Restart it, no difference.

 

Get to work, put it in reverse and it doesn't shift into any gear, basically in neutral as the truck rolled. So now i have no 4th gear and no reverse. It won't change gears until i get it up to 3000Rpms and let off the gas (that is to get it to shift from 1 or 2nd) then it clunks into gear.

 

The truck is a 2002 GMC Sierra Extended Cab, 5.3L Z71 4x4 with 227,000km. Had the tranny fluid changed at 150,000km. What do you pros think it could be? I hope the tranny isn't done. Anybody had an experience like this? Any ideas or input would be greatly appreciated...

 

Burg

jrrod2004 Senior Enthusiast

jrrod2004

Posted
Posted
So this morning i'm driving to work. Get on the highway and it won't shift into 4th gear. Pull over shut the truck off. Restart it, no difference.

 

Get to work, put it in reverse and it doesn't shift into any gear, basically in neutral as the truck rolled. So now i have no 4th gear and no reverse. It won't change gears until i get it up to 3000Rpms and let off the gas (that is to get it to shift from 1 or 2nd) then it clunks into gear.

 

The truck is a 2002 GMC Sierra Extended Cab, 5.3L Z71 4x4 with 227,000km. Had the tranny fluid changed at 150,000km. What do you pros think it could be? I hope the tranny isn't done. Anybody had an experience like this? Any ideas or input would be greatly appreciated...

 

Burg

 

this may or may not help:

 

http://www.justanswer.com/questions/mrv7-4...r-a-normal-turn

truckofwinandawesome Senior Enthusiast

truckofwinandawesome

Posted
Posted
So this morning i'm driving to work. Get on the highway and it won't shift into 4th gear. Pull over shut the truck off. Restart it, no difference.

 

Get to work, put it in reverse and it doesn't shift into any gear, basically in neutral as the truck rolled. So now i have no 4th gear and no reverse. It won't change gears until i get it up to 3000Rpms and let off the gas (that is to get it to shift from 1 or 2nd) then it clunks into gear.

 

The truck is a 2002 GMC Sierra Extended Cab, 5.3L Z71 4x4 with 227,000km. Had the tranny fluid changed at 150,000km. What do you pros think it could be? I hope the tranny isn't done. Anybody had an experience like this? Any ideas or input would be greatly appreciated...

 

Burg

 

this may or may not help:

 

http://www.justanswer.com/questions/mrv7-4...r-a-normal-turn

 

 

so in other words, Better make an appointment with the Dealer.

rodram Enthusiast

rodram

Posted
Posted

yeeeesssss... sorry, your transmission is toasted..

 

assuming this is a 4L60E transmission...

 

from your description, it sounds like the sunshell may be fractured or the splines stripped ...

 

either way, the transmission has to come out for inspection and repair...

 

also... with your 227,000 km on the truck... you have to consider that you have got your money's worth out of it, and that the clutches are worn and it now needs a total transmission and torque converter rebuild... OR install a GM rebuilt ... the GM rebuilts have a good warranty

jblakeney Senior Enthusiast

jblakeney

Posted
Posted
So this morning i'm driving to work. Get on the highway and it won't shift into 4th gear. Pull over shut the truck off. Restart it, no difference.

 

Get to work, put it in reverse and it doesn't shift into any gear, basically in neutral as the truck rolled. So now i have no 4th gear and no reverse. It won't change gears until i get it up to 3000Rpms and let off the gas (that is to get it to shift from 1 or 2nd) then it clunks into gear.

 

The truck is a 2002 GMC Sierra Extended Cab, 5.3L Z71 4x4 with 227,000km. Had the tranny fluid changed at 150,000km. What do you pros think it could be? I hope the tranny isn't done. Anybody had an experience like this? Any ideas or input would be greatly appreciated...

 

Burg

 

Did it shift threw the other 3 gears?? 1, 2, 3 then drop when it went to get 4th? Make any odd noises?? Or did you shift 1, 3??

 

Jbo

 

Edit: But the sun shells are bad about busting!!!! Get ya a beast sun shell if it busted.

kawtoy_77 Enthusiast

kawtoy_77

Posted
Posted

WTF is a sun shell? I have been wrenching for awhile, and never heard the term. I am assuming this is only on the newer transmissions?, and not TH350 or TH400?

burg226 Enthusiast

burg226

Posted
  • Author
Posted

My GM dealer just called. It's toast. Dammit!!!!!!! They gave a me a few quotes as well (these are in Canadian dollars BTW)

 

Rebuilt tranny from the wrecker…

 

91 Days parts, no labour warranty - $2228

 

91 Days Parts + Labour - $2358

 

15 Months Parts + Labour $2618

 

 

 

Have my tranny rebuilt by dealer - $2728

 

1 year parts, 6 months labour

 

 

 

OEM GM new Tranny – 3yr, 160km $3022

 

Now what? Thanks god for the line of credit or i'd be cabbing it!

burg226 Enthusiast

burg226

Posted
  • Author
Posted

BTW. It did shift 1,2,3 then held still in 3rd. I couldn't figure out what was going on. It seemed as if i was driving it in "3" not "D". No noises though, until i got off the highway and it was jamming into gear at 3000rpm.

jblakeney Senior Enthusiast

jblakeney

Posted
Posted
BTW. It did shift 1,2,3 then held still in 3rd. I couldn't figure out what was going on. It seemed as if i was driving it in "3" not "D". No noises though, until i got off the highway and it was jamming into gear at 3000rpm.

 

OUCH, what about AAMCO?? I'd probably do the replacement unit... It will be built in a cleaner place than the dealership service counter.

 

Jbo

truckofwinandawesome Senior Enthusiast

truckofwinandawesome

Posted
Posted
WTF is a sun shell? I have been wrenching for awhile, and never heard the term. I am assuming this is only on the newer transmissions?, and not TH350 or TH400?

 

according to my Old Automotive Textbook, the TRUE Name for the 'Sun Shell' is a Clutch Shell. "A driving shell, or clutch shell, is commonly used to transfer power to one of the planetary sun gears." in our case, it is transferring power to the gearset that is 2nd, 4th, and Reverse.

 

BTW, My textbook is copyrighted 2004.

rodram Enthusiast

rodram

Posted
Posted
My GM dealer just called. It's toast. Dammit!!!!!!! They gave a me a few quotes as well (these are in Canadian dollars BTW)

 

Rebuilt tranny from the wrecker…

 

91 Days parts, no labour warranty - $2228

 

91 Days Parts + Labour - $2358

 

15 Months Parts + Labour $2618

 

 

 

Have my tranny rebuilt by dealer - $2728

 

1 year parts, 6 months labour

 

 

 

OEM GM new Tranny – 3yr, 160km $3022

 

Now what? Thanks god for the line of credit or i'd be cabbing it!

 

I would stay away from the ones from the wrecker... unless you had no choice..

 

When mine died last year, I had my mechanic rebuild it and provide a 1yr parts/labour warranty.. total cost including R&R and taxes was in the $2700 (Can) range ... I was running out of options because I needed it back the next day, and he was able to deliver... but no problems and no regrets on the repair.

 

The GM transmissions are also a reasonable deal with the 3 yr warranty...

az'03Silverado Senior Enthusiast

az'03Silverado

Posted
Posted

If you can swing the $$$, I'd go with the new OEM. Better warranty and it can be fixed under warranty at any GM dealership. If you buy from a junk yard, you're only paying for someone elses problems.

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