What did you do to your NBS GMT800 Tahoe/Yukon Today?

[viven44]

I removed the ABS module Sunday (didn't disconnect battery ---- my bad.. didn't even unlock vehicle). I made sure the vehicle was locked afterwards. Came back today battery was completely dead.... not even enough juice to start with a portable jump starter. Not even enough juice to check CCAs. On thursday or so I checked the CCAs, had about 750 or so left.... the battery was only 2 weeks old at that point.... any thoughts on whether the security or something was on overdrive since it was looking for a module ?

Swapped new battery in... Charging voltage appears to be 13.9V.... with AC running around ~13.4V.... any reason to suspect alternator here ?

On my non-smart carbureted old trucks, I'm used to seeing about 14.5V while the engine is running... any good threads to read on what a good charging voltage on GMT800 is ?

Needless to say I have the battery disconnected now until my module arrives from repair... (I've understood I could even drive the vehicle without the module but I didn't want to so its been sitting)

 

[viven44]

Installed the ABS module that came back from the eBay service (rapid_electronics). For $79 it was excellent service. 24 hour turnaround!! Mailed on Monday received back Friday.

Nice to not have ABS and brake light glaring at you !

I may have a battery discharge problem maybe from malfunctioning door sensors or ignition lock cylinder (potentially), I’ll open a separate thread on this…

 

[project_x]

I did the NNBS front brake upgrade.
I bought coated Raybestos Element3 rotors and pads.
I got lucky with my local wrecker had calipers that looked like they were put on the day the car was wrecked....

Went super smooth and they work great.

 

[dps01]

Washed and vacuumed the 2003 Z71 Tahoe. Treated it to some E85…filled from 1/2 full… burned thru 1/2 the tank afterwards.

She seems happy !

 

[latvius]

My radiator cap sticker was peeling so I made a new one.

https://www.etsy.com/your/shops/me/listing-editor/edit/1805742691

 

[BigSachsy1]

Changed out the tires that came with my 05 tahoe: went from the yokohama yk-htx 285/45/22 to sumitomo encounter ht2 275/50/22. Happy with the change

 

[dadwagon95]

I messed around and traded my old faithful gear off road 20x9s w 275/65/20s (34.6") for a set of 35x12.50x20 with a 20x13 offset. They look really good i think. Also a pretty big tire to be running with just two inch body blocks and no lift kit, minimal rubbing. Cons of trading i sacrificed turning radius forsure

 

[mjgirard]

I drove my 2001 Tahoe 750 miles this weekend from Virginia Beach, VA to Williamsburg, VA then to Wilmington, NC to see and be with family and friends for a long weekend. My speed was between 70 & 80 mph and still returned 16.8 mpg overall with 4 adults and their suitcases on board.
Not a single problem with this 23 year old Tahoe. All I need to do is give it a bath.

 

[Bocephous]

I didn't have time to post on Monday, but I crawled underneath my 2005 Z71 for a quick inspection and noticed that there were some bare looking patches from my NHOU undercoating about a year and a half ago. I've since purchased my own sprayer and had about 2 quarts of Fluid film left over from spraying my Tacoma a couple of weeks ago.

I pulled the Tahoe out of the garage (after I had wire brushed what I could reach) and ended up using both quarts touching up the frame. I also dropped the spare down and hit that area under that good. I pressure washed the body to remove the over spray and loaded 3 of our dogs in the back to go down some area dirt roads to harden up the Fluid film.

 

[Kman]

Fixed the rust spots under the driver side front roof rack that happens to a lot of GMT800 vehicles.

 

[strutaeng]

Last weekend I finally took the time to remove my windshield washer level switch on my 99. I hate to admit this, but several years ago I removed that switch and apparently installed it backwards without knowing it. Ever since, my low level appears on the message center when I filled the reservoir every time I started it. After a while of use, the message didn't show up.

I replaced the reservoir tank on my 06 Suburban because I have a persistent leak (which I still have!) and was going to use the switch on the 99. But I checked it and mine was good. So I reinstalled it but rotated it 180 degrees. I added a bit of RTV.

I also painted my battery tray since it was pretty corroded. I had painted the battery tray on the 06 when I did that. I'm guessing the battery acid causes this rust.

Anyway, no more annoying low windshield washer fluid message!

Regarding the switch: I think it should have continuity normally when there's fluid in the tank. As the fluid drops, the float causes the continuity to break. I compared the 99 switch vs the 06 and they are a bit different, but operation is the same.

 

[NoReverseYukon]

For those of you with dual batteries & a solenoid - Does this mean my solenoid is bad :

There is no key in ignition. I think it took a dump.

 

[clandr1]

For those of you with dual batteries & a solenoid - Does this mean my solenoid is bad :
View attachment 440247
There is no key in ignition. I think it took a dump.

I think it's potentially a bad battery. If it drops below 12.6v once given a chance to rest overnight, I believe it needs to be replaced.

 

[NoReverseYukon]

I think it's potentially a bad battery. If it drops below 12.6v once given a chance to rest overnight, I believe it needs to be replaced.

My thought was that, with the solenoid stuck in the closed position, the battery gets drained when the voltage jumps across the plunger contacts in the solenoid.

 

[clandr1]

My thought was that, with the solenoid stuck in the closed position, the battery gets drained when the voltage jumps across the plunger contacts in the solenoid.

Good thought, and definitely a possibility. With the key off, have you checked for continuity across the solenoid (when it should be open)? If there is continuity, there is your culprit.

 

[DRLexpress]

How about you are reading voltage of the other battery. I don't know but if both batteries "-" goes to ground and the solenoid connects the "+" then you are reading the other battery. Above continuity test will tell you.

 

[Scottydoggs]

so about 3 weeks ago i started hearing the brake squealer or the pad when off the brakes, so i ordered up some new R1 pads front and back. ff to this week, i hear em squealing when on the brakes. so after working late all week and lacking the motivation, i finally got to checking things out after work today. got the whole side of the truck in the air cause i wanted to rotate the tires too. get the front one off, damn pads are like brand new. could have sworn it was the fronts squealing, ok lets see the back, rears are down to 2mm thick riding the squealer. so changed the rears. then did the same on the other side, once again fronts look damn near new, backs were just gone.

i dont know whats up with Gm cars/trucks but every last one ive owned for the last 20 plus years with 4 wheel disks has always used up the backs first, but the fronts were always worn enough to just say f it and replace em. this tahoe just loves the rear brake bias clearly lol

truck stops great again. its funny how you dont notice how bad your brakes got as they age.

 

[ScottyBoy]

so about 3 weeks ago i started hearing the brake squealer or the pad when off the brakes, so i ordered up some new R1 pads front and back. ff to this week, i hear em squealing when on the brakes. so after working late all week and lacking the motivation, i finally got to checking things out after work today. got the whole side of the truck in the air cause i wanted to rotate the tires too. get the front one off, damn pads are like brand new. could have sworn it was the fronts squealing, ok lets see the back, rears are down to 2mm thick riding the squealer. so changed the rears. then did the same on the other side, once again fronts look damn near new, backs were just gone.

i dont know whats up with Gm cars/trucks but every last one ive owned for the last 20 plus years with 4 wheel disks has always used up the backs first, but the fronts were always worn enough to just say f it and replace em. this tahoe just loves the rear brake bias clearly lol

truck stops great again. its funny how you dont notice how bad your brakes got as they age.

My Suburban is the same way. My rear brakes definitely wore out faster than the front. But the front pads were still about 50%worn, so i went ahead and changed them. Fast forward about 7 years later, the rears were toast again, and the fronts are still less than 50% worn. Except this time, im feeling some pulsating in the front brakes, like the rotors are warped. So i plan on once again just replacing ALL of the brakes, pads and rotors front and back.

 

[strutaeng]

That's weird. My 99 Silverado went like 225k on the rear brakes. I had actually forgotten that they were ever replaced until I recently checked my maintenance records. I'm at 265k currently and the rear looks good. I did the third set of fronts at around 250k. Maybe different on SUVs? I haven checked my 06 Suburban rear brakes TBH since I bought it 4 years ago...

We have a 2013 Chrysler minivan and my wife kept telling me the brakes made some grinding noises, but mostly only when wet so I figured that was normal. It had around 70k. Well, one day I finally checked them and the pad was gone on one side, into the backing plate. I was kinda shocked because I was expecting around 120k like on my Silverado (doh!). The rear on that vehicle I replaced, but only because they dusted so much. All wheels still dust a lot, which I find extremely annoying because it's hard to keep the wheels clean.

 

[Scottydoggs]

That's weird. My 99 Silverado went like 225k on the rear brakes. I had actually forgotten that they were ever replaced until I recently checked my maintenance records. I'm at 265k currently and the rear looks good. I did the third set of fronts at around 250k. Maybe different on SUVs? I haven checked my 06 Suburban rear brakes TBH since I bought it 4 years ago...

We have a 2013 Chrysler minivan and my wife kept telling me the brakes made some grinding noises, but mostly only when wet so I figured that was normal. It had around 70k. Well, one day I finally checked them and the pad was gone on one side, into the backing plate. I was kinda shocked because I was expecting around 120k like on my Silverado (doh!). The rear on that vehicle I replaced, but only because they dusted so much. All wheels still dust a lot, which I find extremely annoying because it's hard to keep the wheels clean.

i had a 03 gmc 2500 HD, it used up the rear pads faster then fronts from new. took the same pads too front and back. calipers were huge front and back, but it was also my work truck. did 200 miles a day doing roof repairs, and lots of snow plowing, and pulled my 4,000 lb boat almost every sat and sundays weather permitting of course in the summer.