What would cause the transmission to indicate fluid over fill & blow out vent when the proper amount of fluid was put in (& even after draining a quart after that?

Asked by Cherokee56 Feb 04, 2014 at 06:18 PM about the 2001 GMC Sierra 1500 SL 4WD Extended Cab SB

Question type: Maintenance & Repair

2001 GMCz71 w/ 207,000 miles, well cared for.
mech tells me my xfer case has a little leak, cleaned it up & we were going to watch it.
700 interstate miles later, undercarriage coated. Took it to dealer garage. They say:
Blowing xmsn fluid out the vent tube. Did a xmsn flush; during flush they said they kept
having trouble, as if they were running into pockets of air. Got it flushed & filled. They ran
it & said: still blowing out vent tube & it showed over- full. They drained a qt out & same
thing - fluid level showing overfill & blowing out vent tube. (No loss of radiator fluid
level)What would cause this?

40,145

James answered 10 years ago

You don't believe the mechanic ? well cared for 200k miles, that don't stop parts wearing out .Sorry.

Mark helpful

Cherokee56 answered 10 years ago

LOL, Jimmy! Yes, 207,000 good miles. I did believe there was a problem; just trying to understand what, exactly, would cause that particular issue. But your answer did make me feel better about buying a new tranny, cuz I plan on getting another 100,000 (and if its not failing now, it probably will before I am done with it!).

Mark helpful

Cherokee56 answered 10 years ago

But, if anyone knows of something else that could be the cause that a new tranny won't solve, please clue me in! Oh, also having all the seals in the transfer case replaced, while they are at it, just in case. Anyone know of anything else?

Mark helpful

40,145

James answered 10 years ago

seals should correct the oil loss

Mark helpful

Your Answer:

What would cause the transmission to indicate fluid over fill & blow out vent when the proper amount of fluid was put in (& even after draining a quart after that? 4 Answers

2001 GMCz71 w/ 207,000 miles, well cared for. mech tells me my xfer case has a little leak, cleaned it up & we were going to watch it. 700 interstate miles later, undercarriage coated. Took it to de...

2001 GMC Sierra 1500 SL 4WD Extended Cab SB

-

Maintenance & Repair
I HAVE A 1994 GMC SIERRA 2 WHEEL EXTENDED CAB THE TRANSMISSION WOULD ONLY SHIFT FROM 2 TO DRIVE DROVE LIKE THAT FOR A WHILE THEN IT STOP PULLING ALL A CERTIAN COULD SOMEBODY TELL ME WHAT THE CAUSE 6 Answers

THE TRANSMISSION WOULD ONLY SHIFT FROM 1 TO 2 BUT IT WOULD NOT SHIFT TO DRIVE OR WHEN YOU GO TO DRIVE IT WOULD STELL BE IN 2 DROVE LIKE THAT FOR A WHILE BUT ONE DAY COMMING FROM CHURCH THERE WAS A CLU...

GMC Sierra 1500

-

Maintenance & Repair
04 gmc sierra 1500 5.3 died on me on the highway got it towed home starting going at it, hooked two different scanners to it and not throwing any codes (ecm is working bc the map was reading correctly but also the rpm was zero) anyways checked fire none checked injectors they wasnt working either(built fuel pressure then unplugged fuel relay then turned engine over and the pressure stayed the exact same) i assume it might be the crank sensor but i would think it would throw a code, anyways came back this morning and before doing anything for the hell of it i checked the gas cap and tightened it and it fired up perfect three different times and the last time i let it run and it died after bout 45 seconds (fuel pressure reads 55) and after it died its doing the same thing cranks but wont fire or start 1 Answer

died on me on the highway got it towed home starting going at it, hooked two different scanners to it and not throwing any codes (ecm is working bc the map was reading correctly but also the rpm was...

2004 GMC Sierra 1500

-

Maintenance & Repair
Why is my vehicle sputtering when turning over the ignition after filling up the gas tank to full? 3 Answers

Truck has trouble starting after filling gas tank to FULL. It will start but ,sounds like its sputtering and struggling to start. After starting the truck, it will run great until its next fill up a...

2007 GMC Sierra 1500 SLE1 Crew Cab 4WD

-

Maintenance & Repair
Transmission stuck in first gear. No resistance when moving gear shift. What would cause this? 1 Answer

I drove my truck, 2001 GMC Sierra 1500. down over a small hill with a load of wood aboard. I had it in first gear in order to help slow the vehicle down. Wasn't going more than 5mph. When I got to the...

2001 GMC Sierra 1500 SL Standard Cab LB

-

Maintenance & Repair

Looking for a Used Sierra 1500 in your area?

CarGurus has 7,258 nationwide Sierra 1500 listings starting at $3,950.

Used Chevrolet Silverado 1500

202 Great Deals out of 5,975 listings starting at $2,975

Used Ford F-150

321 Great Deals out of 14,968 listings starting at $1,712

Used GMC Sierra 2500HD

17 Great Deals out of 1,640 listings starting at $9,988

Used Toyota Tundra

35 Great Deals out of 1,184 listings starting at $8,500

Used Chevrolet Silverado 2500HD

16 Great Deals out of 1,285 listings starting at $8,995

Used GMC Yukon

16 Great Deals out of 929 listings starting at $1,225

Used Toyota Tacoma

55 Great Deals out of 1,071 listings starting at $8,708

Used Dodge RAM 1500

3 Great Deals out of 71 listings starting at $4,000

Used Chevrolet Tahoe

24 Great Deals out of 911 listings starting at $11,900

Used Ford F-250 Super Duty

24 Great Deals out of 1,204 listings starting at $7,995

Used Chevrolet Corvette

29 Great Deals out of 1,060 listings starting at $15,871

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.

What would cause the transmission to indicate fluid over fill & blow out vent when the proper amount of fluid was put in (& even after draining a quart after that?

4 Answers

Your Answer:

Looking for a Used Sierra 1500 in your area?

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

Find great deals from top-rated dealers

Related Models For Sale

What would cause the transmission to indicate fluid over fill & blow out vent when the proper amount of fluid was put in (& even after draining a quart after that?

4 Answers

Your Answer:

Related Questions