I have a 1996 chevrolet 2500 deisel truck. can you tell me what the codes P0711 and 1218 mean.

GOT SAME PROBLEM CHEVY DAURMAX DEISEL HD 2500 CHANGE FUEL FILTER AND OIL &OIL FILTER . WHEN YOU COME TO A STOP SIGN OR RED LIGHT IT HAPPENS .I PUT IT IN NEUTRAL AND PUMP ON GAS SO RPM'S STAY AT 1800 RPM'S

Get the codes read. Most auto part stores will do it for free. That will lead you in the right direction

om the sensor that will tell you if the sensor is good

check the rear end fluid its possible that its low or falling. make sure its not the rear wheel bearngsthat u are hearing

This means your vehicle has failed to complete one or more of a series of self-diagnostic tests, usually but not always emissions related. The only way to find out which system has failed the test is to have the Diagnostic Trouble Codes read with special diagnostic equipment. Once you know the codes stored in your vehicle's computer, it will help determine what repairs are needed.

yes it set a code that can be retrieved with a scanner. it could be one of several sensors

mine did the same thing i tried the fuse first and it didnt fix it and it was the relay but try the fuse first

It should be behind the top hose.

Could be as simple as low fluid level in the master cylinder. Check that first and then if it is not low or filling it and making a few starts and stops does not kill the light then stop by your local parts store and they will read your codes for free and tell you what the problem is. Free is good, bad brakes is bad, but hopefully it is just the fluid level.

That code means, throttle position sensor (signal voltage high)
I hope this helps.