Manufacturer communication — 2006 GMC YUKON DENALI XL

Fitment confirmedReporter type: ManufacturerVEHICLE SPEED CONTROL

Relation to the target vehicle

The source's vehicle field includes the trim.

Model year: Match 2006 — Source vehicle field
Model: Match YUKON DENALI XL — Source vehicle field
Trim: Match Denali — Source vehicle field

What the manufacturer’s document says

PIT5195B ・ normal characteristic (no repair) ・ names this vehicle

Applies to

Applies to 2003-2015 GMC Sierra and Yukon models (note: the Yukon years run later than the years this service covers).
the passage
2003-2015 GMC Sierra, Yukon Models

Fault

A customer may say the speedometer needle appears inaccurate.
the passage
A customer may comment that their vehicle's speedometer needle appears to be inaccurate.

Finding the cause

Possible causes

The speedometer needle is driven electrically by a stepper motor and some variation in accuracy is possible.
the passage
The speedometer needle is electrically operated by a stepper motor and there may be some variation in accuracy.
Tire size, tread life and inflation may cause some variation in the readings.
the passage
Tire size, tread life and inflation may cause some variation in the readings.

Steps to confirm (in the document’s order)

Digital readouts such as the "Digital Speedometer" on the DIC read the Vehicle Speed Sensor (VSS) directly and are much more accurate.
the passage
Digital readout devices, such as "Digital Speedometer" on the DIC, are direct readouts of the Vehicle Speed Sensor (VSS) and their accuracy is much greater.
The specification for needle accuracy is +/- 2 MPH (= 3.22 km/h) at any given speed when looking straight at the needle.
the passage
The specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle.

Compiled by reading the full text of the document; each point stands on the passage shown. Check the document itself, linked below, before working on a vehicle.

Stated content

Communication summary
本暫定情報通知は、スピードメーター針が不正確に見える車両について技術者に情報を提供するものです。ディーラーは顧客に対して、スピードメーター針精度の仕様は針を正面から見た場合、任意の速度において±2 MPH (= 3.22 km/h)であることを案内してください。 Machine translation (unreviewed)
This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle.
Go to this passage in the original

Source

Source: NHTSA Manufacturer Communications
Source reference: 10114719
Received by source: 2017-08-15
Incident date: Unknown

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