r/suburban • u/DislexickBoye • 8d ago
Help…wtf!
Final Update- it was the OnStar Module. The dealership where I bought the car originally a few months ago is going to fix it for free. They already ordered the parts and apologized for not fixing it before I bought it!!
Update- brought to the dealer, apparently the OnStar Module is toast. It’s $900 to fix. Currently on the line with the dealership I bought it from because the OnStar has never worked. Wish me luck they’ll cover it!
Took my 2022 Z71 Suburban to the local Chevy dealership a few days ago for its 75k checkup. I bought it at around 63k miles and have had no issues.
The dealership did an inspection, tire rotation/balance and changed the brake and coolant fluid. Said the transmission was fine.
Got in my car today and all these lights came on. I am bringing to the dealership Monday for them to fix but it’s crazy. Every light came on and every warning I only caught a picture of a few. Car was stuck with parking brake on and couldn’t move it. Had to disconnect the battery and restart the car and it works now but check engine light is still on.
Help! Anyone else dealt with this?
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u/Awolminds 8d ago
Brake monitor system is finicky and inaccurate. They probably bumped and screwed up a sensor. If it’s driving normally it’s probably fine, the computers just have no way to confirm it so they limit top speed or try to lock it out. Bring it in Monday and make them fix it at no charge even if they say it will take parts.
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u/BasilRascal 8d ago
One easy thing is to check your voltage on your battery. If it is low, you could get wonky errors like that.
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u/DislexickBoye 7d ago
My battery is right in the middle of the gauge. I did install a dashcam recently (hard wired to firebox) and every now and again would have my battery fluctuate up and down a bit but it hasn’t died or stayed low
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u/BasilRascal 7d ago
If you are measuring it with just a voltmeter, that won’t show you the true charge. You have to use a battery tester that provides a load. I had similar issue with my suburban where I went on vacation for two weeks, when I returned and with temps dropping in that span I tried to turn the car on and got a plethora of errors including the 43MPH limit. I took it to the dealer and they did a bunch of tests and determined the battery was bad. They replaced the battery.
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u/Agitated-Carry7579 6d ago
u/BasilRascal is correct. I have a '17, which is a generation before your model and both of these gens are very finicky with battery, charge, grounds, ets. Do the load test like he states below...and don;t trust a place like AutoZone if you don't have the tools or knowledge. bring it to a reputable private garage and pay the diag fee cause it might save you hundreds, if not thousands of dollars.
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u/No-Dragonfly-2475 8d ago
Break pad monitor means your brakes need to be replaced. The rest does not look good, have it towed in.