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The speedometer and cruise control do not work in my gmc envoy what do i need to do first or i can check first before bringing it to a service repair station
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Hi, Any other issues w/the truck? Does the speedometer work ALL the time? Some of these use engine vacuum to control the Cruise. Check under the hood -around the engine - and verify the vacuum lines are all securely attached. BE CAREFUL - do this w/the engine off and ENSURE you note where all the hoses are connected. There may be a lot and easy to get them confused.
It appears that you need to have the speedometer calibrated. Unfortunately, this is very challenging. You'll need to take it to a mechanic. Dependent on where you take your Envoy it can cost around $75+
Most times when this happens with Envoys and Trailblazers, your PCM or computer is storing a check engine code, which will disable cruise control. Scan your vehicle with an OBDII scanner to see what code may be stored. Once the code is cleared, your cruise control will work again.
Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Envoy instrument cluster repair
This issue is caused by faulty motors inside your Envoy instrument cluster and can only be repair by taking out the instrument cluster and replacing the motors which requires de-soldering and soldering tools and the correct replacement parts.
I repair Envoy instrument clusters for a very reasonable amount and have a free 12 Year Guarantee on my work, you can see my site at www.DrSpeedometer.com
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