2003 GMC Sierra 1500 "test truck throttle" Questions

...throttle body circuits). Not duplication of problem. Checked connections at black box on fire wall, etc. can not duplicate problem. The truck goes into -Limp- mode in the morning on the way to work ...

...the predicted MAP combined are outside a calibrated range for more than 3 seconds. Circuit/System Testing Inspect for the following conditions: ?€¢ Vacuum hoses for splits, kinks, and proper ...

...to the throttle position switch may have (at that time) become loose. Start the truck and do a wiggle test on all the connectors, not the ignition wires of course. Let me know how this works

throttle pressure regulator, fuel filter,and fuel pump relay. The pump gets gas to the injectors but from there it does nothing and goes nowhere. We scanned the computer and it didn't give any problem

test drive but everytime i put it in gear it idles down extremely low then shuts off, when you put it back in park it idles normal. I tried this three times with the same result everytime. What is the

...throttle body and MAF. New air filter/fuel filter. No obvious vacuum leaks. Is it time to start changing ouut sensors in hopes of a fix? You never replace anything, on a ...

...this sound like a fuel pump problem or something else? I've tried changing the fuel filter, testing the fuel pressure regulator, and reseting the PCM. Probably a temperature sensor making the ...

...throttle immediately after starting, the engine will die. The EGR valve is sticking. Remove and clean with fluid filum or white grease and u should be fine for a while or just replace it for they ...

...test and since the truck isnt here i can't tell you where the test will go (throttle body assembly, PCM, etc.) most likely it will be the throttle position sensor which is a part of the throttle ...

...error code. Started car,check engine light came back. Error says throttle position current error. Tested wires to TPS. Black wire, white wire both read ok. Tested blue wire, getting 5.at idle and ...