What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[j91z28d1]

good that you have options.


you'd think a dealership could change u joints and test drive it.

 

[Doubeleive]

good that you have options.


you'd think a dealership could change u joints and test drive it.

ya I asked the same thing on the phone and he said they do not have a QC guy on Saturdays, go figure

 

[Doubeleive]

i'll put my 10 year to work and have him hold the other end and guide the yoke back in the transmission

 

[Doubeleive]

Not sure on our vehicles, but others I've had, there would be match marks on the drive shaft and on the pinion housing or flange and usually when removing the driveshaft you would re-install matching up the marks.

is this what you are talking about, kinda looks like they marked it though

 

[Doubeleive]

this is a screen grab from a 1A vid, same orientation

 

[gooffeyguy]

is this what you are talking about, kinda looks like they marked it though
View attachment 403092

Those look like weights that were tacked on at the factory.

The red/orangish lines (above your arrow on the left) are like the marks I'm talking about. Looks like someone marked the flange and the yolk and those are lined up. Try to find the same type of mark on the shaft

 

[mikez71]

get the one from autozone it's a big suitcase type kit with probably 10 or more different caps
powerbuilt
View attachment 402621

You were right!
Had to go back and exchange the first one with a broken gauge.. then it worked. There is an overflow port afterall in the filler neck..

which exits on the bottom here...

so you need this adaptor...


so thank you everyone, your concerns/theories all valid.

block combustion tester turned up negative, but was thinking it only leaks when cold so may not be a reliable test for that type of leak.. took about 5-10 seconds in exhaust stream to show positive..So a small leak only when cold may not put enough c02 in the coolant to show..

will test for leakdown tonight and keep watching my coolant level...

was 105 degrees today, on freeway cruising at 80mph my temps hit 204.. might need the radiator side flaps..

 

[89Suburban]

@Doubeleive im sorry man. Really getting sick of the high rates and ****** service myself.


My accelerator replacement was a total FAIL. Had to limp home 1/8 throttle with the 4 ways on about 20 miles and manually shifting gears to use that momentum of down hill rolling 30 HP to make it.

I will have to replace my TB sensor and or complete TB and drop it off for the fkn idle relearn Monday I guess.

TIRED!!!!!!

 

[j91z28d1]

You were right!
Had to go back and exchange the first one with a broken gauge.. then it worked. There is an overflow port afterall in the filler neck..
View attachment 403093
which exits on the bottom here...
View attachment 403096
so you need this adaptor...
View attachment 403097

so thank you everyone, your concerns/theories all valid.

block combustion tester turned up negative, but was thinking it only leaks when cold so may not be a reliable test for that type of leak.. took about 5-10 seconds in exhaust stream to show positive..So a small leak only when cold may not put enough c02 in the coolant to show..

will test for leakdown tonight and keep watching my coolant level...

was 105 degrees today, on freeway cruising at 80mph my temps hit 204.. might need the radiator side flaps..

not that's interesting, there is one but it's built in and comes out the bottom? clever.

if you want to, you can send an oil a sample off, they can tell if there's coolent in the oil. if it's getting into the cyl, it should be getting past the rings into the oil too, leaving behind whatever it is they look for as coolent. I forget what exactly it is.

 

[Doubeleive]

No other mark, but there is a fresh scratch mark corresponding on the other side but I think I found the problem or part of the problem WTF!