2007 GMC Yukon

Tiny
PILOT30
  • MEMBER
  • 2007 GMC YUKON
Tires and Wheels problem
2007 GMC Yukon V8 Four Wheel Drive Automatic

i have a yukon slt 2007
its come with 17" rims and I replacement with 20" rims
so do I need to reprogram the vehicle or not?
Do you
have the same problem?
Yes
No
Wednesday, January 13th, 2010 AT 12:26 PM

9 Replies

Tiny
BRIAN 1
  • EXPERT
You have to recalibrate the EBCM with a tech 2 scan tool for the new size tires.
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Wednesday, January 13th, 2010 AT 7:51 PM
Tiny
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What is the ebcm√
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Wednesday, January 13th, 2010 AT 11:05 PM
Tiny
BRIAN 1
  • EXPERT
Its the electronic brake control module, its the brain of the ABS system. It has to be recalibrated when bigger or smaller wheels are put on, because the ABS reads wheel speed, so changeing to a bigger size will cause ABS activation because a bigger wheel rotates slower causeing an inacccurate reading, if its calibrated it will read normal and no problems will occur.
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Thursday, January 14th, 2010 AT 9:22 AM
Tiny
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I put my bigger wheels last July and there is no signal appear and there was no problem
my original tires was 265/70-r17 and I put a new tires 275/55-r20
so still need to make recalibrate?
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Saturday, January 16th, 2010 AT 10:21 AM
Tiny
BRIAN 1
  • EXPERT
Yes you still will need to recalibrate, because you are changing to a taller and wider tire. It will affect ABS function because the EBCM reads wheel speed and a taller wider tire will spin slower and could cause unwanted ABS activation so recalibrating will prevent this problem, it doesnt take long to re-calibrate, I would call a local GM dealer and explain what you are doing and if they are a good dealer they should be able to take care of it at a normal price.
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Sunday, January 17th, 2010 AT 12:20 PM
Tiny
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I went to the dealer and I told them my problem
Thy said thy will not make any recalibrate to me because I didnt buy the rims from them, I bought them from some where else.
And they said not them who deside this, the gm head querter who said that!
I dont know if thy lie or not, thats why I asked u
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Sunday, January 17th, 2010 AT 12:50 PM
Tiny
BRIAN 1
  • EXPERT
Well, yes and no, because they have to be GM OEM wheels and the dealer has to get a VCI number from GM which is a recalibration number to accept that size tire and they can down load it into the vehicle. This info might help:Changing of tire size on midsize and full size trucks and utilities.

Recommendation/Instructions:
When attempting to change tire size, it is important to understand what tire size the customer is interested in installing. General Motors will ONLY support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. DO NOT use the information offered in the ABS module (tire size selection) as a guide to see what tires are applicable to the vehicle in question. Keep in mind, changing the tire size in the ABS module will only affect ABS wheel speed sensor calibration that are direct inputs to the ABS module. It will not correct or calibrate the speedometer's accuracy, and will not change the calibration of the ABS rear speed sensor value on vehicles that obtain rear wheel speed data from the ECM/PCM/VCM via the VSS.

Example.
2004 Chevrolet Colorado LS with 235/75/R15 tires. The customer would like to install P265/75/R15 tires. Although ABS module shows this tire can be programmed, the 265/75/R15 will only fit under a Colorado with the Z71 suspension. This suspension will offer acceptable wheel clearance. Therefore, a calibration will not be offered for this application.A second example would be 20" wheels and tires for the full size pick up trucks. A calibration has been developed for this specific application in response to popular demand from our customers. Accessories released an approved tire wheel combination that has been tested and validated by GM Engineering for a specific application.

The only way to confirm that a calibration is available would be to visit YOUR sales department. Using the sales order guide, the following combinations of items must be available for the vehicle in question. If you can build a vehicle, using the sales guide, using the same model year, body style, engine size, transmission type, axle type and suspension type, any tire offered for that combination will have a corresponding calibration available. If the rims are aftermarket they might not have a calibration because GM does not support aftermarket products just OEM.I"ve gone through this with other people on there vehicle, its a pain in the butt. Might want to call another dealer, might get a different answer.
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Sunday, January 17th, 2010 AT 2:10 PM
Tiny
PILOT30
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So I have to choose between:
1. Buying oem rims or
2. Looking for another place to make recalibrate
If so, do u know any place I can buy the recalibration program from √
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Monday, January 18th, 2010 AT 11:03 AM
Tiny
BRIAN 1
  • EXPERT
Yes you would have to choose between OEM and aftermarket, but GM dosent support the software for aftermarket wheels.I was suggesting calling another dealer they might help more than the last one. As far as the software update you cant buy it because only GM dealers have access to it and is not made for the general public. If you go with aftermarket wheels you might get lucky and find a company that does this or OEM wheels and going to the dealer. There is not much beyond this, its the only info. There is not much else I can suggest.
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Monday, January 18th, 2010 AT 11:26 AM

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