Automobile / GMC / Suburban

GMC Suburban Repair Questions and Answers

Question:  I recently bought a 1999 Chevy Suburban K1500 LT 5.7L 4x4 66,000miles. Probably half the time when coming to a stop, when I pull out there is a clunk sound coming from the rear of the vehicle. It's just one klunk and then everything is fine until I come to another stop. I suspected a bad u joint and had the mechanic at the Chevy dealer check it and he said it was in good shape and that the sound I'm hearing is normal for Suburban's and Tahoe's as the rear end is synchronizing with the transfer case. I have several friends with similar Suburban's and have never heard this sound when riding with them but they certainly hear it when riding with me. I recently got back from a 1700 mile trip and several times the klunk sound was much louder and one time it klunked so loud and hard I thought I may have a transmission laying on the ground. Always after the initial klunk it drives just fine. A friend of mine said it sounds like a bad yoke. Is replacing the yoke an expensive procedure.? Any ideas?

Answer: Actually it sounds like it could be spider gears in the differential, removal of the diff cover would be required to check , you may be able to jack the rear up , in neutral and spin the tires and possibly hear the noise.

Question:  1997 GMC Suburban mileage: 155,000.  My blinkers work when they decide to.  If I turn the hazards on, they always like they are fine. The light bulbs look like they are fine, but it is hard to tell

Answer:  The turn signal switch sounds like your problem . Replacing it should fix the problem.

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