Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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What is the pressure when the return is blocked off?
I see, thanks. What is the condition?
I see, thanks. There was a service bulletin for,
"Some owners may comment about a perceived engine surge while trailering. The surge appears to be an engine surge, yet when diagnostics are performed, such as checking for variation in the map sensor, there is no fluctuation in the reading."
Could that be what you are experiencing?
Yes, It also says,
"All of the vehicle readings will show no indication of a surge and if there is a variation in the sensor reading, make sure that the vehicle is not getting TPS input from the driver."
I see, thanks. However all the parts that you can change won't fix it if it is a calibration problem. Come again, anytime and Happy New Year!