05 Chevy single CAB 4.3 V6 auto trans I have check engine light codes

Tiny
BK1989
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • 10,100 MILES
I have a 05 Chevy single cab 4.3 v6 auto trans I ha e check engine light codes p0101 and p0449 my truck would not go above 50 the other day while dri ing now will not go above 25 and eventually died on me. I put it on a lift it went through all gears fine trans good engine good and full power in park on the ground but while driving no power. On code 0101 I was wondering if I should do MAF sensor witch I already cleaned or some sensor high speed sensor on the throttle body I'm not sure if that's the name any ideas I need help bad
Friday, April 13th, 2012 AT 6:34 PM

13 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Because you have the 0449 code it can also cause a maf code. You need tocheck all your hose connections onteh engine and then have a smoke test done on the evap system. It may be the solenoid causing your problems. Also make sure the harness going to the maf is not by any plug wires, solenoids or relay.
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Friday, April 13th, 2012 AT 7:06 PM
Tiny
BK1989
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The maf code come up before the evap code on the code reader does that matter or still go with checking the evap code first? And since I already did a lot (on code 0449)checked vacation lines and replaced value under the Hood I was thinking the canister really not much left And also my oil pressure gauge reads really high sometimes above 80 on my dash I heard bad stepper motor maybe any ideas oil in truck is good and not overfilled
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Sunday, April 15th, 2012 AT 7:07 PM
Tiny
HMAC300
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Youmight have a bad switch for the op, check that manually. Also if you have put a performance air filter on it, they get to much oil and will set a maf code. The cannister vavle get sufll of dirt and makes it quit working so if you can clean it out it may work again, if not replace it.
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Sunday, April 15th, 2012 AT 7:37 PM
Tiny
BK1989
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What do you mean `op`
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Sunday, April 15th, 2012 AT 8:16 PM
Tiny
HMAC300
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Oil pressure switch
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Sunday, April 15th, 2012 AT 9:50 PM
Tiny
BK1989
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  • 6 POSTS
Do you think with the problems stated first it could be catalyst converter
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Tuesday, April 17th, 2012 AT 3:03 PM
Tiny
HMAC300
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The codes your aregistering say no. Fix the things that are wrong like the evap first then clean the maf remove the old codes and start from there.
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Tuesday, April 17th, 2012 AT 3:54 PM
Tiny
BK1989
  • MEMBER
  • 6 POSTS
Well it turns out it was the converters I cut in front of them to test my truck wouldn't run I had to but the were clogged and that's what was making g the sound too I don't have the codes except for p0449 I have changed gas cap and purge valve also cleaned vent canister with air hose it was dirty put it back on and still same code any idea what would be my steps to fixinging this I don't have 90 dollars for someone to tell me what I already think and still have to buy parts I'm doing it all myself my truck only has 101,600 miles
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Tuesday, April 17th, 2012 AT 9:39 PM
Tiny
HMAC300
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Change the valve and then look for an air leak, it can be miniamal. That is why you need a smoke test to see where the leak is and fix it.
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Tuesday, April 17th, 2012 AT 11:18 PM
Tiny
BK1989
  • MEMBER
  • 6 POSTS
What is the difference between the vent control valve and canister vent solenoid I know where the canister is is the vent control the other thing attached directly to the side of the canisters or is it the one at the end of the hose the hose is about two feet going to something else under my bed
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Wednesday, April 18th, 2012 AT 4:36 PM
Tiny
HMAC300
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First pic is of cannister vent valve 2nd cannister purge
Images (Click to make bigger)
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Wednesday, April 18th, 2012 AT 6:33 PM
Tiny
BK1989
  • MEMBER
  • 6 POSTS
I changed what is in pic two but in pic one it show the electric harness with the plug on the canister and right behind on that towards the bottom of the canister is a hose going to a box at the right bottom of the pic I heard right there is a vent control valve ( canister. To hose then part connecting to box is that right one is 130 the other 200 dollar I just wanna be right before I spend money don't want to ha e to buy more then I need
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Wednesday, April 18th, 2012 AT 6:55 PM
Tiny
HMAC300
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Take this to a pro and have him fix it right
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Wednesday, April 18th, 2012 AT 6:56 PM

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