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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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I have a early (classic) 07 gmc serrira.IT has dual zone

Customer Question

I have a early (classic) 07 gmc serrira.IT has dual zone heat air.after you drive a wile the left side goes to full hot.
JA: Have you checked the coolant level? Has there been any leaking from the hoses?
Customer: sorry i wasnt done typing yet. if you turn the key on and off it resets itself.are there two seperate water controls?do you think its the slide control or is there something elese that controls the heat (hot water flow ) on the left side only.
JA: What is the model of your '07 GMC?
Customer: serrira
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: how about answering the question
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 4 months ago.
Category: Chevy
Expert:  EricFromCT replied 4 months ago.

Hi. Welcome to chat! My name is ***** ***** have been a dealer tech for 20 years. I will attempt to assist you with your concern today.

Expert:  EricFromCT replied 4 months ago.

Does this condition of left side going hot sometimes not exist during the next ignition cycle and the system may operate normally then?

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Thanks for using Just Answer, Eric