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2000 Silverado 4.8 - code question
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hate cars
User
Nov 13, 2009, 2:39 PM
Post #1 of 13
(5314 views)
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2000 Silverado 4.8 - code question
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hello, i have a 2000 Chevy silvarado 1500 EX-cab with a 4.8L
I have a p0449 code i think its the valve between the cab and the bed on the drivers side.
If so i ran 12v to it and the valve works does this work off 12v or is it less.
I used a test light to check for power and it just glowed very little i don't know at what RPMs
does it power it up is there something else that could be doing this.
(This post was edited by Tom Greenleaf on Nov 13, 2009, 11:27 PM)
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Loren Champlain Sr
Veteran
/ Moderator
Nov 13, 2009, 4:38 PM
Post #2 of 13
(5306 views)
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hatecars; P0449 is the EVAP purge control solenoid is seeing a fault. This solenoid is grounded by the PCM to operate.
There is quite a flow chart involving testing. Be very careful applying voltage to circuit as you may end up frying the PCM. Purge control solenoids are a common fault. I would recommend that you have this professionally diagnosed. It will not cause a drivablility issue, but will cause an emissions failure. If you 'ignore' it, the check engine light will remain on and you won't know if something else (very detrimental) goes wrong. Sorry.
Loren
SW Washington
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 13, 2009, 4:44 PM
Post #3 of 13
(5303 views)
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You should have constant 12v to it with the key on so if you don't, check fuse marked "ENG1" in the underhood fuse box.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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hate cars
User
Nov 13, 2009, 5:32 PM
Post #4 of 13
(5297 views)
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Thank you.
do you have a wiring diagram so i can track it
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 13, 2009, 5:46 PM
Post #5 of 13
(5290 views)
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Not much to the diagram. It's pretty basic.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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hate cars
User
Nov 15, 2009, 12:04 PM
Post #6 of 13
(5270 views)
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Thank you for the wire diagram i found a cut wire by the body mount.
how can i rest the check engine light with out a snap on scanner
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 15, 2009, 12:08 PM
Post #7 of 13
(5266 views)
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There is no way.
This is directly from Alldata
PROCEDURE
A Tech II or equivalent Scan tool must be used to clear Diagnostic Trouble Codes (DTCs) from the PCM memory. When clearing DTCs, follow the instructions supplied by the Scan tool manufacturer.
NOTES:
If you have an AutoZone or Advanced auto in your area, they will read and clear them for free. Just don't tell them you already fixed it.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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hate cars
User
Nov 15, 2009, 12:36 PM
Post #8 of 13
(5257 views)
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Thats what i thought but was worth asking. Thanks ill have the wife bring it by my friends shop.
do you think that i could change a 4.7 L from a 2000 jeep grand cherokee with another size jeep engine V8
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 15, 2009, 12:53 PM
Post #9 of 13
(5252 views)
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No, The management system is no engineered to operate it.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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hate cars
User
Nov 15, 2009, 12:56 PM
Post #10 of 13
(5249 views)
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When you say mannagement syster do you mean the computer if so i know i would have to change it so
it would know what size engine.
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 15, 2009, 1:02 PM
Post #11 of 13
(5245 views)
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No, it's the computer and every piece of wiring in the car which cannot be swapped anyway because the VIN number is burned into them and they won't work in another vehicle..
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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hate cars
User
Nov 15, 2009, 1:10 PM
Post #12 of 13
(5239 views)
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Oh  i was trying to find a cheeper way out 4.7 L cost so much they have problems with the heads i was told they crack i was going to put a new crank and bearings till i drained the oil and seen anti-freeze come out first. rebuilr 4.7 is anywhere from 2000 to 2500 and the kick in the nuts is a used one is 1800 with low miles 1200 with over 130k.
once again THANKS so much for the wireing diagram
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Loren Champlain Sr
Veteran
/ Moderator
Nov 16, 2009, 6:44 PM
Post #13 of 13
(5228 views)
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>>and the kick in the nuts is <<
Is that hazel nuts, or walnuts? Heads won't crack unless you get them HOT.
Loren
SW Washington
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