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

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diagnostics/powertrain/engine control module/data display/exhaust aftertreatment
in the aftertreatment data list it will show twc temperature

Just some preliminary info, I have the Tech2 hooked up and I had to make a short run through the neighborhood a couple blocks to drop some stuff off and back. Didn't go over 25 mph. I'll be heading out onto the freeway in about an hour to pick up some dinner about 10 miles away and will get more info under heavier acceleration and higher speeds.

When I first started temps were about mid 800's. While driving they got up to about 1150-1175, then would go down to the 900's while idling.
 
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I also noticed today that the rubber boot around my shift lever is torn and has some grease around the area. Can this be replaced without removing the lever or opening up the column? Looks like the base probably just pops off at the column and just slides off the lever?
bdcd9ea42eb500c798ace806273138b4.jpg
 

Doubeleive

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I also noticed today that the rubber boot around my shift lever is torn and has some grease around the area. Can this be replaced without removing the lever or opening up the column? Looks like the base probably just pops off at the column and just slides off the lever?
bdcd9ea42eb500c798ace806273138b4.jpg
tried to do that before they always ripped for me, better to take the shifter off and go from the back
 

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Wes
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Just some preliminary info, I have the Tech2 hooked up and I had to make a short run through the neighborhood a couple blocks to drop some stuff off and back. Didn't go over 25 mph. I'll be heading out onto the freeway in about an hour to pick up some dinner about 10 miles away and will get more info under heavier acceleration and higher speeds.

When I first started temps were about mid 800's. While driving they got up to about 1150-1175, then would go down to the 900's while idling.
I wonder if i should just reset the fuel trims, I've never done it before but I was reading on the ls1tech website they say to reset the fuel trims if you change anything that makes the engine breath different and I added the cai and 90mm tb when I first got the truck, I just don't want to mess anything up, what do you think @swathdiver
 

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Mark
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You didn’t state 91 without ethanol thus the confusion so I thought you were talking normal premium. We don’t have that option except at a very few stations, our normal premium is 91-92 octane but with ethanol. The stations that have clear have normal premium too. West coast has the highest gas prices in the lower 48. Highest is Cali, then Washington, then Oregon. Lucky us. At least in Oregon we just sit in the car and an attendant fills the tank.
 

Tonyrodz

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You didn’t state 91 without ethanol thus the confusion so I thought you were talking normal premium. We don’t have that option except at a very few stations, our normal premium is 91-92 octane but with ethanol. The stations that have clear have normal premium too. West coast has the highest gas prices in the lower 48. Highest is Cali, then Washington, then Oregon. Lucky us. At least in Oregon we just sit in the car and an attendant fills the tank.
In NJ it's illegal to pump your own--just sayin'.
 

Rocket Man

Mark
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I also noticed today that the rubber boot around my shift lever is torn and has some grease around the area. Can this be replaced without removing the lever or opening up the column? Looks like the base probably just pops off at the column and just slides off the lever?
bdcd9ea42eb500c798ace806273138b4.jpg
It has to come off the small end of the shifter so if you can accomplish that without doing either of those two, let me know. I’ve got a few other jobs for you lol.
 

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