WHAT WIRES ARE WHAT ON MAF SENSOR,POWER,GROUND ECT,ITS 6 WIRE PLUG

TRUCK MEANS C1500 PICKUP?
NO SURE THE PROBLEM? IS THERE ONE?
THE MAF WIRE TO THE PCM SO IT CAN COMPUTER FLOWS AND MATCH INJECTION RATES TO IT.
MY GUESS IS YOU HAVE NO SERVICE MANUAL
NOR KNOW HOW TO TEST ANY MAF.
DID THE SCAN TOOL SHOW MAF DTC ERRORS?
MOST MAF AR3 3 PINS, GROUND , SIGNAL ,DC POWER.
MANUAL IS HERE
https://eautorepair.net/Marketing/Default.asp

I WILL PRESENT THE MAF PIN OUT.

12VDC POWER IS ING1 FUSE. BOX UNDERHOOD
B PIN IS GROUND
IT IS THAT SIMPLE.

code p 0190 refers to fuel rail pressure(FRP) sensor--circuit malfunction===causes wiring---FRP sensor---ECM
check that you have not dislodged a wire while carrying out the maf repair code p 0113 refers to intake air temperature(IAT) sensor--circuit malfunction===causes wiring open circuit / short to positive ---wiring short to ground ---ground wire defective ---IAT sensor --ECM
the original code had nothing to do with the MAP sensor

code p 0306 refers to cylinder 6-- misfire detected ====causes --engine mechanical fault--wiring---ignition/fuel system--injector---ECT/MAF sensor---ECM
the mechanical fault can be
problem hydraulic lifter holding a valve partially open
loose valve seat insert
a compression test will determine if there is a mechanical problem as for the rest , check all connections for clean /tight terminals
substitute the ECM with a know good unit to eliminate it
substitute the ECT/MAF sensor with a known good unit
run the fault codes again as engine lights report on a variety of faults as well as the transmission faults

Hard Start
Checks
Action
Definition: Engine cranks OK, but does not start for a long time. Does eventually run, or may start but immediately dies.
Preliminary
• Refer to the Powertrain On Board Diagnostic (OBD) System Check .
• Refer to Important Preliminary Checks .
• Refer to Visual/Physical Checks .
• Search for bulletins.
Sensor/System
• Check Engine Coolant Temperature (ECT) sensor for being shifted in value. Connect a Scan Tool and compare the Engine Coolant Temperature with the Intake Air Temperature on a cold engine. The ECT and IAT should be within ± 3°C (5°F) of each other. Check the resistance of the ECT sensor if the temperature is out of range with the IAT sensor. Refer to Temperature vs Resistance . If the ECT sensor resistance is not within the specification, refer to DTC P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage or DTC P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Voltage .
• Check the throttle body inlet screen for foreign objects or damage that may affect the MAF sensor airflow sample. Refer to Throttle Body Assembly Replacement .
• Use a scan tool in order to check the IAC operation. Refer to Idle Air Control (IAC) System Check .
• EGR system. Check the for the following conditions:
- EGR pipes and adapter for vacuum leaks.
- Remove the EGR valve and check for a stuck open pintle. Refer to Exhaust Gas Recirculation Valve Replacement .
Fuel System
• Check the fuel pump relay circuit for proper operation. Refer to Fuel Pump Electrical Circuit Diagnosis .
• Check for incorrect fuel pressure. Refer to Fuel System Pressure Test .
• Check the fuel injectors. Refer to Fuel Injector Solenoid Coil Test .
• Check for fuel contamination. Refer to Alcohol/Contaminants-in-Fuel Test .
Ignition System
• Check for proper ignition voltage output by using the following steps:
- Clip the spark tester J 26792 to engine ground.
- Connect one end of a spark plug wire to the spark tester while leaving the other end of the spark plug wire to the coil being tested.
- Connect one end of another spark plug wire to the other coil tower.
- Connect the other end of the spark plug wire to ground.
- Crank the engine while observing the spark tester. A crisp blue spark should be observed.
- Repeat the above steps for each coil.
• If an adequate spark is not present at the coil(s), check for the following conditions:
- Coil(s) - Cracks, carbon tracking/arcing, or a resistance value outside the specified range.
Coil Resistance
5000 - 8000 ohms (5K - 8K ohms)
- Spark Plug wires
• signs of arcing/cross
• cracks
• carbon tracking
• firing
• plug boot damage
• pinched or improper routing
• high resistance
- Spark plug wire resistances should measure less than the specified value.
VIN 1 Spark Plug Wire Resistance
7000 ohms (7K ohms).
VIN K Spark Plug Wires Resistance
10000 ohms (10K ohms).
Important: Spraying the secondary ignition wires with a light mist of water may help locate an intermittent problem. Ignition components will arc to ground when a secondary component is malfunctioning.
- Defective module.
- Ignition System Wiring - Loose ignition module feed or ground connection, or damaged system wiring.
• Remove spark plugs and check for the following conditions:
- Fouled plugs
- Cracks
- Wear
- Improper gap
- Burned or damaged electrodes
- Improper heat range or reach
• If spark plugs are gas or oil fouled, the cause of the fouling must be determined before replacing the spark plugs.
Engine Mechanical
• Excessive oil in combustion chamber-Leaking valve seals. Refer to Engine Mechanical.
• Low cylinder compression. Refer to Engine Mechanical.
• For incorrect basic engine parts. Inspect the following:
- Cylinder heads
- Camshaft and valve train components
- Pistons, etc.
- Refer to Engine Mechanical.

code po306 refers to cylinder 6 misfire detected===causes ---engine mechanical fault--wiring--ignition/ fuel system--injector--ECT/MAF sensor--ECM

the pressure is good so rule out mechanical fault
injectors being cleaned and tested so rule out injectors
fuel pressure not tested to see if it is average or minimum
check MAF sensor for correct voltage and/ or resistance
IF the misfire moved when the plug and wires were swapped then check the wires and connections . If not then check distributor cap for crack or dirty in side the cap allowing shorting of the HT spark

I hear that. Okay, it's a MAF sensor, here's how one on a buick century (2005) works: from a fuse in the power distribution box, power is sent to the maf sensor when the ignition key is on. There is also a ground wire, and then there is a third wire, the signal wire to the pcm. If no data from sensor, first check the power and ground to the sensor. A voltmeter, one lead in the power terminal at the pigtail (disconnected), and the other lead on the ground terminal-with key on, you should see 12 volts or close to it. If so the power and ground is good for the sensor. If no volts show on the voltmeter, keep the positive lead of voltmeter on the power wire terminal at the pigtail, and move the negative lead of voltmeter to the negative post of the battery. If still no 12 volts at the pigtail, the sensor is not getting a reference voltage: either the fuse is blown or a short in the wire from the power distribution box to the sensor.
(Now some sensors use a 5 volt reference signal, and this would come from the pcm itself: so look for a voltage at the sensor-it will either be about 5 volts, or about battery voltage.)
If moving negative lead of voltmeter (or testlight if no voltmeter) to the negative post of battery causes voltage now-then the ground wire for the sensor is bad.
If the power (the reference signal) and the ground to the sensor is good, but no data? Then you have to suspect the sensor is bad or the signal wire to the pcm may have a break. Then you have to pull the connectors off at the pcm (disconnect the battery first) and find the pin-out number for the maf sensor signal wire. If the wires are visible at the pcm, try matching wire colors to find the correct pin number. Now you can check the continuity of the maf signal wire from the pigtail to the pcm connector (easy on an '05 buick: the pcm is under the hood very close to the maf sensor). Set the voltmeter to ohms, one lead on the pigtail at the signal wire, the other on the pcm connector at the terminal where the maf signal comes in. For the little tiny pin terminals on the pcm connectors, use a paper clip stuck in the slot, if you need to. You should see low resistance to current flow- a very low ohms value, maybe just a fraction of an ohm. That tells you the wire is good, has good continuity-it ain't broke.
Yup, you just better invest in a digital volt/ohm meter (DVOM), if you don't already have one-it will save you big bucks from the stealerships. I use a craftsman meter from sears-about $40, and it's over 10 years old.

p0306 refers to cylinder 6 misfire detected===causes engine mechanical fault--wiring---ignition/fuel system--injector ---ECT/MAF sensor---ECM
IF there was a mechanical fault (hydraulic follower ) or valve it would be there most of the time and not just on start up. Possible injector fault but I would be inclined to check out the MAF sensor codes p0351 &2 refer to ignition coil A and ignition coil B primary /secondary--circuit malfunction === causes --wiring--ignition coil--ECM ( all causes for the both)
going on this check out the coils and check that the wiring and connections are clean and tight. basically I would be inclined to change out the coils and check /replace the MAF sensor.
change the engine --sounds like advice to get some extra money out of you.

code p0102 refers to MAF/VAF sensor ---low input ===causes --wiring short to ground. MAF/VAF sensor
code po172 refers to system too rich --bank 1=== causes ---intake blocked --EVAP canister purge valve---fuel pressure ---HO2S sensor
code po random misfires ---plugs --wiring ---injectors--low compression
code po305 refers to cylinder 5 misfire detected ===causes --engine mechanical fault--ignition/ fuel system ---injector ---ECT/MAF

I would check that the air filter is not blocked first as it affects the MAF/VAF sensors . Have a fuel pressure system pressure test done

The old give me money for nothing statement from a mechanic instead of knowing how to fix it.
code p0300 refers to random/ multiple cylinder/s misfire detected===causes--spark plug/s---HT lead/s---injector/s---ignition coil/s--low compression--wiring
code po303 refers to cylinder 3 misfire detected--- engine mechanical fault---wiring---ignition/ fuel system---injector --ECT/MAF sensor --- ECM
code p0306 refers to cylinder 6 misfire detected===causes --engine mechanical fault---wiring---ignition / fuel system---injector ---ECT/MAF sensor---ECM
code po316 refers to misfire detected during start up--first 1000 revs==causes--engine mechanical fault---wiring---ignition /fuel system---injector
code po2195 refers to heated oxygen sensor (HO2S) 1 bank 1 signal stuck lean===cayses ---HO2S---fuel pressure---injectors---intake leak
it also refers to O2S sensor 1 bank 1 same causes and also refers to HO2S 1 bank 1 implausible signal===causes --- short to positive---short to ground---Ho2S ---ECM
code po2196 refers to the same items as 2195 . some causes are also air intake restricted
Have a compression test done some where else and it will indicate the condition of the motor. The rest is sensors and wiring problems.

I am assuming you are talking about a Code P0306 and if so that has to do with Cylinder # 6 computer is detecting a misfire condition. Some of the possible causes can be something mechanical wrong with the car, wiring, ignition or fuel system, a bad injector, ECT (engine coolant sensor) or MAF (mass airflow sensor) or ECM (Engine Control Module) I would pull the spark plug on that cylinder and look at it and also check the plug wire.