TrailBlazer 4WD V8-5.3L VIN M (2006)
The Cruise Control System will disengage when the ECM detects that the accelerator pedal override is active for greater than 60 seconds.
Cruise Control Inhibited
The engine control module (ECM) inhibits the cruise control operation when any of the following conditions exist:
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A Cruise Control System related DTC has been set.
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The vehicle speed is less than 40 km/h (25 mph).
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The vehicle is in PARK, REVERSE, NEUTRAL, or 1st gear.
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The engine RPM is too low.
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The engine RPM is too high.
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The vehicle speed is too high.
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The system voltage is not between 9-16 volts.
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The antilock brake system/traction control system (TCS) is active for more than 2 seconds.