On my 2014 GMC Yukon XL sometimes wont start with remote and recently car will not start after cycling key a few times as well as hitting unlock key it works. I pulled negative on battery and let it sit for 30 minutes. Worked great for a day and then the next morning back to being hard to get to start. When it does crank it starts great. I think the problem is in the security or the key. Am i far off from being right and is there a way to reset it? Also when driving down road the A/C controls are not working. The radio will turn on and off. The security, ABS, tire pressure , and air bag displays on the dash. The computer will display check tires and service air bags flashing. The speedo and tach also go up and down. Acting like security system thinks its being stole.
Possible lose connection to battery or ground on the body.Grab and twist every ground wire you see .tight and clean oxydaition.
SOURCE: 1997 Blazer dash displays ABS light, Air Bag...sometimes battery light.
I think your BCM which is the body control module has failed, have a self test run on it to see if it will give any codes, if it won't test then it is the problem.
SOURCE: shuts off while driving. no fuel pressure. pcm fuse blows/ fuel pump relay inserted.
Sounds like the fuel pump is shorted.
SOURCE: Toyota Tundra 2005. ABS, Airbag, Tire & cruise dash lights flash
how do you turn the maintenance light off after making oil change?
SOURCE: air bag light flashes6 times then service air bag
the system will need to be scanned to get the code. This will pinpoint the problem. These trucks are common for crash or collision sensor failing
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sorry for miss info, it is a 2010 GMC Yukon XL not a 2014
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