Whining sound when 4 wheel drive is engaged

Asked by Wafuller Feb 28, 2016 at 08:08 AM about the 2012 Chevrolet Suburban 1500 LTZ 4WD

Question type: Maintenance & Repair

When we engage 4 wheel drive you can hear a whining sound from the front
when you step on the gas.  We just bought it 2012 suburban certified about
55k for mileage.  Any ideas?

1 Answer

8,935

It could be the wheel hubs for the 2012 year it should have auto locking or "real time" 4wd. It could also simply be a bearing issue. Either way, when this happens, I always encourage people to NOT use the 4wd or drive the vehicle to avoid damaging the 4wd or Front End and have it towed to reputable mechanic. Especially if it is certified pre owned, I would take it back where you bought it asap!

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