PIT5214A

Bulletin No.: PIT5214A
Date: Jun-2015
Subject:
GM TAC Support of Vehicle Vibration Complaints - US And Canada Dealers Only
Models:
2010 - 2015 GM Passenger Cars and Light Duty Trucks
This PI was superseded to update Model Years and Recommendation/Instructions. Please discard PIT5214.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
GM has identified that multiple repair attempts are being performed on Customer vehicles that exhibit vibration conditions without utilizing the support of GM
Technical Assistance Center (GM TAC).
Recommendation/Instructions
To improve the effectiveness of resolving vehicle vibration complaints and improve customer satisfaction, General Motors has implemented the following
guidelines effective immediately
1.
If valid vibration frequency or RFV (Road Force Variation) data has been collected and a repair attempt does not correct the customer complaint,
contact GM TAC for further support. Do NOT make further repair attempts
2.
For any vehicle that remains unrepaired after being at the dealer for three (3) days or more and a related bulletin or PI is not found, contact GM TAC for
further support.
Important: Be prepared to provide Pico Scope readings and possibly send a Pico snapshot to the TAC snapshot database upon request of the TAC
consultant. Pertinent information about the vehicle should be known (i.e. tire measurements, aftermarket equipment, etc.) along with as much of the “Vibration
Analysis Worksheet” completed as per TSB 03-00-91-001 prior to contacting TAC as the TAC consultant will need to document this information in the case.
Notice: The Pico Scope (CH-51450A Oscilloscope Diagnostic Kit) is GM’s “essential tool” for vibration analysis. It’s very important technicians are properly
trained in its usage. Without a Pico Scope, it can be difficult if not impossible to properly diagnose vibration concerns. This tool will (when properly configured)
provide source, frequency, order, and amplitude of a given vibration. As a baseline, all vibration measurements should be from the driver’s side inboard seat
track.
Technicians should reference the latest version of the following TSBs for such Customer complaints:
TSB
Description
PI1354
Information on Vibration Analysis and Diagnostic
03-00-91-001
Vibration Analysis Worksheet
10-03-10-001
Revised Wheel Balancer Mounting Instructions (HD Models Only)
00-03-10-006
Information on Tire Radial Force Variation (RFV)
09-03-10-016
Wheel Balancing Machine Finish Damage to Chrome Clad or ChromeTech®
Wheels
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03-03-10-007
Information on Tire/Wheel Characteristics (Vibration, Balance, Shake, Flat
Spotting) of GM Original Equipment Tires
12-03-10-001
Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel
Slip (Tire Sliding on Wheel)
As a reminder, the "Vibration Diagnosis and Correction" section of SI can be found under General Information. Otherwise, GM TAC highly recommends that all
Service Advisors are familiar with and retain a copy of the “Customer Concern Verification Sheets” (found in the latest version of TSB 01-00-89-010) – allowing
them to properly capture specific details about the area of the vehicle and under what driving conditions a Customer is experiencing a vibration.
ADDITIONAL SI KEYWORDS:
shake shimmy vibrate
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the
remaining steps do not need to be performed.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may
occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools,
safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that
your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
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