GMC Yukon Denali Questions

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Dash is cracked . It shakes an the cracked is getting worse
What seems to make the problem better or worse? Nothing helps
How long have you had this problem? a few months
My car will not start some electrical things come on and it makes a clicking sound
What seems to make the problem better or worse? Not sure
How long have you had this problem? Has been dragging when starting last couple of dsys

What seems to make the problem better or worse? Hesitation at 55
wont restart till coll down .keep getting u1096 code loss of commuication instrument cluster .

How long have you had this problem? 8 to 10 months
We were shopping, went into store and came out and XM completely vanished from radio. Then we get home and next morning we come out and the car is completely dead. Battery very low but its brand new. Need help
How long have you had this problem? just started 8-19-17
This is the error message that popped on the other day! What do I need to do? Fluids have been checked and all are okay!
We checked the relays and the bulbs. Still nothing works.
My breaks are sticking and there new

Water dripping (at first) now pours from lower left and right corners of AC console (control for rear passengers). Have had sunroof & windshield drains checked - no clogs. I Read that quite a few owners of same make/model car had same issue. Turns out was leaking per bad seal of Onstar Antennae that sits right atop driver's head to the left of the sunroof (I've never used or even opened the sunroof).

I’ll be taking car in next week for diagnostic to ensure it's not a bad seal on the windshield or sunroof. Costs about $150 to diagnose and R&R the windshield. If a bad seal, may be able to fill in at leaking area but most likely will have to R&R windshield... not a big issue except the auto glass shop does not guarantee against glass breakage & then I’d be out major $$.

If not the windshield, next have to take car to another body shop and leave it to check if there’s a bad seal on sunroof. $50 initial diagnostic fee to start off with at that shop and rep states “and then we go from there.” That sounds to me like $$$. Both windshield and sunroof have been checked for clogged drains. No clogs. No glass breaks or cracks. Nothing found.

If it is a leak around the Onstar antennae, dealership quoted $600 to diagnose and replace with new unit. This seems ridiculous as I see many shark fin antennas on eBay Motors and most are under $50. There are so many different OEM shark fin option though, and I need to know whether this can be replaced with a generic shark fin antennae or must it be an OEM part? I read that Onstar was aware of the problem and provided replacement antennas. Unfortunately I don't think that's an option now as my dad cancelled the Service due to high cost and little if any use in 12 years.
The first time, the leak was just a few very slow drops, and the 2nd time a bit more...but the last 2 times pretty forceful - like turning on a faucet for a bit. Fortunately it drips (or sometimes pours) right onto the plastic center driver console where the cup holders are located so no wet carpet thus far.

Until last August I drove a 2004 Town & Country... Loved that car, but it went to salvage after my one and only accident in near 30 years! So since my mother didn’t need an extra vehicle after my father passed away in March, I bought this Denali from her for $4500. A couple weeks ago my mechanic said a customer was asking to buy my car and what was I asking? The shop tech asked if I’d take $6K. Next day he wanted to know lowest acceptable price (I just I blurted out $5,895. He then asked if I would consider $5300 with him paying for detail cleaning if I would ID and repair the water leak. I said I’d consider it but would take me awhile to get repair estimates. A local dealer offered me $3,000 (after a quick inspection and unaware of the leak) whether I buy a new/used car from them or not. I can’t figure out why this guy offered $5300 without a test drive. Did he know something I don’t?

Has anyone run across this issue with water leaking from this particular area? I’d appreciate advice on whether it’s more likely a bad seal in the Windshield or sunroof or around the Onstar antennae.

There are two other issues I’ve noticed with this vehicle but they’ve not been happening enough to warrant diagnostics. Occasionally, I’ll hear what sounds like an intermittent train whistle muffled and heard from afar- when accelerating or just driving along. Then on a rarer occasion, when I turn off the car, the floorboard under my feet continues to vibrate as though I’ve not turned off the car - no sound from the engine, however. Just how long would you think I can expect this vehicle to last before needing major repair? Is 12.5 mpg good for this vehicle? Also, I’m no a math whiz so I’d welcome opinions as to whether I should just get this current leak issue ID’d/repaired and keep this vehicle?

Thank you all in advance! I really appreciate any and all assistance.
I would like to know how often mileage wise to change the transmission fluid in my 2004 Yukon Denali. I am at 206k and I am unsure when the last time it was serviced for that.
I put feon back in all it came out on rear shock on right side
I was driving at 70 mph and car started shaking,stabilitrak light and engine light came on,weve owned vehicle only a month with 6k down so were invested in this vehicle,is there a lemon law that the dealer has to repair this since its only been a month at the most,and if not how much am i looking at, the shop said they have to ruin diagnostics on it first that will cost around 275 just to find out problem,we are on vacation stranded,took a 200 dollar taxi to room,somebody give me some advice please,my email is the vehicle is not under warranty so its all out of pocket so do i have any leverage on nt...please help the dealership fix what they sold me 3 weeks ago,how much am i looking ta if they wont pay for it...
Battery Checked OK needed new alternator installed. next day went out to start and no nothing. Shop took it back and checked everything said no problems. Brought it home next day not start.
I have had problems with the seat heaters just come on and off for about 20 minutes. does not happen all the time.
its under the dashboard on driver side and also hooked up to the security system?
What does zero hours mean? Is that why my truck won't start? All fluids are full at the time.was only driven 10 miles per hour .was no warning lights telling me of any problems. Took my truck for regular schegdual maintainance and they power washed my engine and causing electrical problems. So had to keep my truck for two days and tried to fix it.720 481 5694 michelle
What is this? what does it do> why is the light on?
Just started about a month ago
It won't work the radio does work at the navigation CD when I come out when I hit the eject button
Says stability sys disabled since I changed rear brakes and rotors, has never said that before, what happened?
i was told take a drive cycle??? but the sensor has not ever been changed??
The exterior passive lock/unlock buttons on the doorhandles of my Yukon do not work. They work fine on the passenger side, however on the driver front and rear door they do not work. I have change the handles but this did not fix the problem. Have also change the fuses. Any suggestions?
Unplugged switch and checked for shorted or bad wires, still runs. Any suggestions?
It comes on and off while driving and while driving you a noise that sounds like the brekes are scrubbing
looking for cost and service in my area 85014
Both rear struts failed at 20,000 mi, front (RHS) failed 30,000. mi. Rear grinding on open road causing me to limit speed under 30 mph. Front is grinding with any bumps in the road, particularly smooth speed bumps at slow speed.
The cruse control will not work. When you try to set in it will not work.
When the vehicle is unlocked, the mirror continually folds out instead of tilting to the proper position. In reverse, the mirror assembly constantly, repetitively, and slowly "clicks" to the curb side view. The same will occur when the vehicle is placed in drive and when the mirror attempts to return to its original position.
Gas Guage worked fine and was always accurate until I changed the fuel pump out and now it isn't working at all
Car has ran fine until now. I dont know if its a bad fuel pump or electronic module? Any help?
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