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Sierra 1500 Classic

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Why does my 2007 GMC Sierra Classic shifts from 1st gear to overdrive?
Hello. Most of the time this is caused by a pressure issue within the transmission. It can also occur of there is a major internal failure as that is what the computer does to try and protect the transmission. I...
Truck runs fine then stall until i put into park
What you are describing may be a result of a faulty speed sensor, potentially low transmission fluid or a even a faulty transmission control solenoid. As your vehicle travels down the road, the computer analyzes data being sent by vehicle...
I have a 2007 GMC sierra classic. What can be the problem if I have no pressure on the brakes
Hi Jessica. Thanks for contacting us today. One of the most overlooked components that can cause a brake pedal issues like you've described is the proportioning valve. This component is located under the hood and is responsible for adjusting the...
Disconnected battery to install new radio. Reconnected and now it won't start.
Hello, thank you for writing in. Start with the simplest of tests, as all of the symptoms you are having point to an issue with the battery being discharged or incorrectly installed. Make sure the battery is fully charged, and...

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