GM Service Manual Online
For 1990-2009 cars only

Object Number: 175760  Size: SH

Tire waddle is a side to side movement at the front of the vehicle and/or the rear of the vehicle. The waddle can be caused by the following conditions:

    • A steel belt not being straight within the tire (broken or shifted belt)
    • Excessive lateral runout of the tire
    • Excessive lateral runout of the wheel

The waddle is most noticeable at a low speed of about 8 to 48 km/h (5 to 30 mph). The waddle may appear as ride roughness at 80 to 113 km/h (50 to 70 mph). The waddle may appear as a vibration at 80 to 113 km/h (50 to 70 mph).

Inspection Procedure

  1. Raise the vehicle.
  2. Support the vehicle with safety stands.
  3. Perform the following preliminary inspection:
  4. 3.1. Wear gloves when inspecting the tires in order to protect against the possibility of the steel belts sticking through the tire.
    3.2. Index mark the tire with a crayon in order to note the start and the stop position.
    3.3. Rotate each tire and wheel by hand.
    3.4. A broken or shifted belt will appear as a twist or a bump in the tread.
  5. You may use tire substitution in order to identify the faulty tire. Perform the following steps for a tire substitution check:
  6. 4.1. Use a comparable tire in order to replace each tire, 1 at a time.
    4.2. Test drive the vehicle.
    4.3. You will eliminate the problem when you remove the faulty tire from the vehicle, if the problem is tire and/or wheel related.