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

[j91z28d1]

apm? air pressure? if so as far as I know the air pressure commands are for testing only

I looked again. it seems to be a hybrid thing. under powertrain, accessory power module, special functions. I get apm setpoint control.

while in there I did see the cooling fan test for relay 1, 2 and 3. these trucks use a resistor pack on each fan to make 3 speeds. 1 sounded like low speed and both fans came on. 2 sounded litter faster and both came on. 3 was crazy loud but only the passenger side came on. guess I gotta dive into that and see with summer coming. I remember looking at the wiring diagram once and getting a slight headache lol. guess I'm diving back in.

I'm not even sure it should run both for just relay 3 turned on. I turned the ac on max with the windows down but it's not hot enough, high 80s at best. could only get high side pressure up to 198 and relay 2 commanded on. 3 never was.

 

[Doubeleive]

I looked again. it seems to be a hybrid thing. under powertrain, accessory power module, special functions. I get apm setpoint control.

while in there I did see the cooling fan test for relay 1, 2 and 3. these trucks use a resistor pack on each fan to make 3 speeds. 1 sounded like low speed and both fans came on. 2 sounded litter faster and both came on. 3 was crazy loud but only the passenger side came on. guess I gotta dive into that and see with summer coming. I remember looking at the wiring diagram once and getting a slight headache lol. guess I'm diving back in.

I'm not even sure it should run both for just relay 3 turned on. I turned the ac on max with the windows down but it's not hot enough, high 80s at best. could only get high side pressure up to 198 and relay 2 commanded on. 3 never was.

might be a hybrid thing, on the gas trucks both fans come on no matter the speed.
that's how I found out one of my fan motors was bad, right side was not spinning reached down to see if it was froze up bumped the wire harness and it kicked on, discovered the motor was going bad and had partially fried both sides of the connector

 

[Doug118]

Finally changed my steering rack after dealing with it leaking for almost a year lol

 

[Doubeleive]

Finally changed my steering rack after dealing with it leaking for almost a year lol

View attachment 400553

bumper cover had to come off?

 

[j91z28d1]

might be a hybrid thing, on the gas trucks both fans come on no matter the speed.
that's how I found out one of my fan motors was bad, right side was not spinning reached down to see if it was froze up bumped the wire harness and it kicked on, discovered the motor was going bad and had partially fried both sides of the connector

yeah its a hybrid thing. I think I finally wrapped my head around it after having to draw on the diagram lol. 3 trigger wires from the ecm controller 5 relays to give them 3 speeds. I think pro damand labeled the one low but it's also the high speed too. so all 3 input have to be on you get hi to both fans and tech 2 was just triggering 1 for #3. there is an option 1,2 and 3 but when I did that it sounded more like med. the one on hi sounded much louder but I didn't have the truck on, just the key forward. so running both fans on hi off the 12v was probably dragging the voltage down.

I'll have to wait till it's hotter or maybe block some the air to the condenser, get the hi side up enough for request 3 to enable and see what the fans do.

 

[Rocket Man]

I love this Griot’s Speed Shine this time of year. The Silvy only gets dusty and if I wash it I have to towel dry it or else it gets water spots. This thing looked terrible and I cleaned it in about 10 minutes with the Griot’s and a microfiber towel. Ready for tomorrow’s grocery run.

 

[Doug118]

bumper cover had to come off?

Nope but I’m extremely mad I didn’t take it off the first time I changed the rack. It just makes it so much easier when you have to get out from under the truck

 

[iamdub]

I love this Griot’s Speed Shine this time of year. The Silvy only gets dusty and if I wash it I have to towel dry it or else it gets water spots. This thing looked terrible and I cleaned it in about 10 minutes with the Griot’s and a microfiber towel. Ready for tomorrow’s grocery run. View attachment 400557

I have the same tire inflator. Branded "TiGaAT".

 

[justchecking]

I hooked it

 

[Tonyrodz]

I hooked it
View attachment 400591

Luckily the hook didn't put a hole in it. Might have to cut the barb off the hook if you can't wiggle it out without damaging the headliner.

 

[Charlie207]

Went for a drive up to Acadia National Park. I was able to cash in my government service for a free lifetime vehicle pass, so that was cool.

Rig did fine; no dramas on the drive to/from the park and around Bar Harbor. Stopped at two breweries on the way up, and five in the ride home, but we stayed in Portland on the way back to break up the return trip. Ate nothing but steak, crab and gobs of lobster for four days.

Campsite was nice and in a good spot.

Top of Cadillac Mountain. We got there as early as we could, and had most of it to ourselves for a mimosas and scenic overlooks of the ocean.

(How not to take a pic.)

Awesome trip, and can't wait to do it again.

 

[pwtr02ss]

Went for a drive up to Acadia National Park. I was able to cash in my government service for a free lifetime vehicle pass, so that was cool.

Rig did fine; no dramas on the drive to/from the park and around Bar Harbor. Stopped at two breweries on the way up, and five in the ride home, but we stayed in Portland on the way back to break up the return trip. Ate nothing but steak, crab and gobs of lobster for four days.

Campsite was nice and in a good spot.
View attachment 400687

Top of Cadillac Mountain. We got there as early as we could, and had most of it to ourselves for a mimosas and scenic overlooks of the ocean.

View attachment 400688

(How not to take a pic.)
View attachment 400689

Awesome trip, and can't wait to do it again.

Maine is my favorite state. Steph and I try to visit once a year. Thank you for sharing and making me jealous!

 

[avalonandl]

I am in the state of Confusion.....

 

[jared999]

Picked up some high quality paint - going to clean, prep and paint my running boards once my adhesion promoter gets in. Maybe spray the rear plastic scuff plate too

 

[Tonyrodz]

Picked up some high quality paint - going to clean, prep and paint my running boards this week. Maybe spray the rear plastic scuff plate too

View attachment 400760

Make sure to get some adhesion promoter so it'll stick to the plastic.

 

[SpyShops212]

Maine is my favorite state. Steph and I try to visit once a year. Thank you for sharing and making me jealous!

Yes I agree! I took the family once every couple of years to Portland. There is so much to do in the summer. I love to go on the lobster fishing boat then when you return there is a place to cook your lobster you just caught and eat the New England clam chowder in the bread bowl. The sail boat ride is nice. In Portland they operate on the honor system which is cool. I stop to Kennebunkport on the way back to NYC and buy the Maple Syrup on the homemade glass bottle. Damn I need to go this summer.

 

[SpyShops212]

bumper cover had to come off?

Bumper cover does not need to come off to change the steering rack. Only the underside protector with the four bolts. I would change the inner steering tie-rods and use Duralast Gold HD also the ends using OEM or at least grease the fittings. You are going to need an alignment. Don’t worry about the dash light with will go off once you align the truck.

 

[Doubeleive]

Bumper cover does not need to come off to change the steering rack. Only the underside protector with the four bolts. I would change the inner steering tie-rods and use Duralast Gold HD also the ends using OEM or at least grease the fittings. You are going to need an alignment. Don’t worry about the dash light with will go off once you align the truck.

lol, I don't need to change mine just was curious if the bumper cover had to come off for some reason I changed the one in my 03 a couple times, and a few older vehicles in the past.
but why on earth would you have a dash light from changing the rack n pinion?
I could see maybe if you totaly fubar'd it up so bad the yaw sensor was out of whack or something....

 

[Charlie207]

Ordered pads & rotors for front/rear from Rock Auto. I ordered the exact same parts as I did two years ago, and they were about $70 more expensive this time around.

 

[Sparksalot]

Ordered pads & rotors for front/rear from Rock Auto. I ordered the exact same parts as I did two years ago, and they were about $70 more expensive this time around.

Damn. How hard do you drive it?

I’ve had thecopcar 4.5 years and 40k miles. Haven’t changed them yet.