13 problems related to front suspension have been reported for the 1999 GMC Sierra. The most recently reported issues are listed below.
Hen driving at 30 mph or over the vehicle will start to pull to the left, and when making a left turn vehicle will also start to make noise.
At take off and at 45-55 mph front of vehicle vibrates. Dealer kept vehicle once for 3 weeks, could not find a problem. Consumer is taking vehicle back to dealer at this time.
After service department replaced several components in the front end of my 1999 GMC Sierra sle xcab 2wd short box it now pulls to the left on flat highway where as it pulled to the right before the parts where installed. If there is ruts from wear in the highway then it will maintain or track them. I explained to the service manager that a 300 pound person will pull the front end alignment approximately 1 degree so it has to be right on and he said it was. Well it still pulls to the left after they replaced all the parts in the front end on there bullentin for the vibration problem. The service manager tells me there is nothing more they can do for me. ( dot number: m63d tire size: p235/75r16 ).
To those that could help me get GMC or randy reed GMC pontiac in kansas city, mo to fix this vibration. I have had this vibration in the truck since I drove it off the lot when it was brand new at 6 miles with a deliver miles of 23. I have taken it back to the dealer 13 times in the last 14 months and 8 out of those 13 times it was for the vibration. The dealer had put all new tires on the truck after about 3,000 miles but still could not get the vibration all the way out. It was to a point where I could stand it but I was not happy with it. The vibration comes on between 65 to 70 mph which indicates the tires. The tires are goodyear wrangler st p235/75r16 owl which is the original oem tire for that truck on that year. During the testing around the time of exchanging of all the goodyear wrangler st for exact same thing we put a set of firestone wrangler ht I believe on it and it rode perfectly smooth. On 08/15/2000 I took my truck in for a bulletin the service manager wanted to do to it to strengthen the front end on it and I got it back two days later and it rides rougher than before. I took it back on 08/29/2000 and the new service manager got involved and said he couldnt feel anything on vibration so I took him for a ride and when you go up or down a hill with the cruise control on at 65 or 67 mph you feel the vibration in the floor seat and steering wheel also the mirrors vibrate sometimes where you can not make out the vehicle lights behind you. Then the service manager said it still rides smoother than my new demo with less than 600 miles on it. I believe he has those firestone wrangler something on the demo. I also talked to GMC a few times and they are to the point there is nothing they will do. I like the truck but hate the vibration and it is very frustrating on trips. The transmission also downshifts when you go over a hill with it set on 60mph and air conditioning running. They wouldn't even list this complaint when I told them about it.
Vehicle vibrates severely at speeds above 55. Vehicle shakes when brakes are applied. Dealer has advised potential problems with front hubs, rear shocks, wheels and tires. Vehicle has been to dealer three (3) times since 08-25-99 for diagnosis and repair of problem, but as of 09-10-99, the problem of overall major vibration hasn't been resolved.
Vehicle vibrates at highway speeds, goodyear replaced all tires, still vibrates,. Twice, dealer said "operating as designed".
Front suspension failed. Nlm.
Vibration of entire vehicle at highway speeds from day one.
Major vibration at speeds over 60, also antilock brake failure or jumping --dealer was very receptive and still is but gm seems to be ignoring this problem.
When the truck is in motion there is a flutter from the front near the windshild and make lots of noise.
Vehicle has had vibration at highway speeds since day 1. Have taken it to the dealer twice. Have also had all 4 tires replaced by firestone. Dealer said vehicle "operating as designed. ".
Since purchased vehicle experience vibration and recovers very slow from a bump in the road which is causing the anti-lock brake system to fail due to the suspension bouncing while braking .
Bad vibration at highway speeds. Bad vibration when hitting bumps. Entire vehicle vibrates at highway speeds. Had front-end alignment and tires rotated, balanced same problem.