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Hello I am new to this site. I have a 5.3 vortec engine from a 06 tahoe. I am getting P0171 P0174 P0101 codes but what it seems only when I am accelerating at freeway speed. 2 weeks ago on the freeway going about 75mph it stalled out on me and hesitated a little bit to come back on got the car back on on 2nd or 3rd try and made it home. I have scangauge2 hooked up and will post some PID here shortly. I cleared the codes and ran car for 30 min just idling in driveway and never got codes again, I drove in town roads and nothing but got on the freeway and around 70mph codes came back. I cleaned my MAF sensor and same thing going on. I'm definitely new to scan tool information and meanings in the form to diagnose it correctly.. PID codes from scan gauge are the following if it means anything to anyone I would appreciate your input.
PID00=
PID01=
PID02=0174
PID03=0202(loop open)
PID04=2D (LOD=17)
PID05=81 WTF=191
PID06=86
PID07=A0
PID08=84
PID09=A0
PID0A=
PIDOB=41 map psi 9.4
PID0C=104D RPM=2086
PID0D=73 MPH=71
PID0E=
PID0F=
PID10=BABA
PID11=4C TPS=29
I dont have a way of checking live STFT or LTFT with the scan gauge2 that I know of. I cleaned both air filter and the MAF at the same time. Also my fuel PSI stays at 62 while I rev up to 2500 to 3000 RPM. Unless I buy a different OBD2 reader to read my live fuel trims I dont think I can see them on my SG2.i just dont want to be throwing parts in my car at random. Without seeing my live FT I'm not sure which route to go.
I sprayed water on and around every vacuum hose I could find, around MAf/air filter and around intake gasket also around injectors and didnt see a change in RPMs
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