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GM Bob
GM Bob, ASE Certified Technician
Category: Chevy
Satisfied Customers: 1103
Experience:  30 plus years. experience as GM technician, ASE Master Technician and GM Certified.
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Can I preform the calibration on the control head of the

Customer Question

can I preform the calibration on the control head of the auto a/c on a 2007 tahoe with a snap on Modus Ultra. i am getting a code 3933
Submitted: 1 year ago.
Category: Chevy
Expert:  GM Bob replied 1 year ago.

Hello my name is Bob.

When your programming the control head you need access to the GM website. There you download the update calibration.

Have to pay to use the website and I don't think your modus will work.

Expert:  GM Bob replied 1 year ago.
Just checking to see if you need more help?
I know my answer was not what you wanted to hear
I think most dealers will reprogram it for under $100.00