Question about 2008 Chevrolet Silverado 2500HD 2WD

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2008 chevy silverado cruise control will not work. once in a great while it comes to life. Brake fluid is full. I'm stumped. It seems like a loose connection but can not narrow it down. One time I was under the dash checking connections and it started working. I have tried to repeat this with no success.

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Having same problem. narrowed it down to brake light switch. going down road and cruise wont set, messed with brake pedal and it will arm have even put foot under pedal and lifted a little and it would arm. have a switch coming to replace.

Posted on Dec 17, 2010

  • plumber01 Feb 28, 2011

    did this solve your issue? i am having the same problem with my 08 silverado

  • Brent Travis
    Brent Travis Dec 30, 2016

    What switch did you order?

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It is a micro switch in the brake pedal, i just had the same issue and got it fixed

Posted on Dec 06, 2012

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98 chevy k1500 cruse control


Hi,

Appreciate the "Ask Me".

To my knowledge, Cruise Control would be relatively difficult to diagnose without a scan tool attached to the control module to read the error codes. Additionally, car versions in my country seldom have such a device since our roads are narrower and travel distance is not that great.

Though most known causes are:
  • the connector to the module;
  • loose brake pedal/switch;
  • loose clutch pedal/switch (for manual transmission);
  • vacuum line to actuator (most likely), vacuum actuator, diaphragm, control valve.
Other possible components to check are:
  • the control module itself (bolted to the firewall);
  • control cable or linkage;
  • speedometer sensor;
  • steering wheel controls switches;
  • throttle position sensor.
As posted above, quite a number of possibilities. Any other indications, speedometer OK; abnormal throttle responses; abnormal idling, brake light always ON, slack in the accelerator/gas pedal? Was it cutting in/out before? Was there any recent repair work done on the engine before the cruise control cut out?

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Aug 04, 2008 | 1999 Chevrolet Silverado 1500

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