Question about Pontiac Grand Am

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Pontiac Grand Am Popping sound when the wheel is turned

My son has a 1999 Pontiac Grand Am GT. A year ago he had front brakes put on and the car began to make a thumping sound such as a spring being twisted and popped. This occurrs when the wheel is turned to the right or left at slow speeds, 5 mph. It does not happen everytime. I mentioned it to the garage and they told me he needs new struts. Well the struts just went on and the car is still making the poping sound. The garage cannot find out why and it is driving them crazy. The car has 104,000 miles on it and runs great. The weilds have been checked as well as the transmission no problems found there, any suggestions?

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  • sfc_coop Apr 21, 2009

    1999 Pontiac Grand Am. I have the same problem. Very sporadic but a definite heavy spring popping sound when making a slow tight turn out of a driveway or parking lot? I cannot locate any signs of rust. I thought possibly the spring was coming loose in its housing but see no evidence anything is breaking loose? My sound is coming from the front wheel passenger side. Otherwise the steering seems pretty sound.

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Old thread but its the upper strut mounts, they are notorious on these cars

Posted on Aug 30, 2011

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Broken sway bar 90% possitive

Posted on Apr 24, 2009

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Sounds like a half shaft to me try turning in a tight circle and see which side it clicks on left or right
make circles in both directions

Posted on Apr 15, 2009

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Thats bad, if it really is the trans. When wheels are up in the air, put the car in gear, and grab the coil spring. If a wheel bearing is bad, you will feel the vibrations through the spring. If you compare right and left, you will be able to tell which wheel bearing is bad.

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There is a common issue with the 1999-2005 Grand Am with the ABS/Traction Control system. The problem ranges from being intermittent, usually during slow-speed turning maneuvers, to constant, every time you drive the car.

The problem usually is tied to the wheel speed sensors, or the electrical connections to these sensors. The front seem more problem-prone than the rear. As 'first-aid', the preliminary step usually involves removing the wheels and inspecting the wiring and connector If everything looks intact continue on.

Disconnect the connector, clean the contacts, give it a dab of dielectric grease, and reassemble. If the problem persists, it is best to have the DTCs (Diagnostic Trouble Codes) read to determine the malfunctioning component. Once that is determined, replace the malfunctioning unit. The wheel speed sensor is part of the hub assembly and can not be purchased separately.

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Dec 30, 2008 | 1999 Pontiac Grand Am GT

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