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Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra Electrical and Computer Questions
352 messages, Last post on Nov 23, 2009 at 8:26 AM
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Hello, I have a 2000 4WD Chevy Silverado with the 5.3 V8 with 49,000 miles. Today when I was headed home from work I noticed that Service Engine Light was on. I headed to the auto parts store to use their scan tool. I pulled out code P0440 “Evaporative Emission Control System Malfunction” After a little research I found that it might have been caused by the fact the gas cap was not all the way tight. Is this true? Also will the MIL reset itself if the problem is gone? What else could set a code P0440? Thank you so much! Jeb!
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Replying to: z71bear (Jul 11, 2006 3:57 pm) |
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I have an 03 silverado that I just dropped a new engine into. The original engine was a 4.8L and I bought a 4.8/5.3L to drop in it. The engine went in and connected up fine, but it is not starting by the key. If i bypass the ignition it will turn over. There is also a light that is on from the dash that has a symbol of a lock. Many people are stating that this might be a computer problem. Is there some kind of security lock, do I have to just reprogram the computer, or do I have to have a new computer put in? Also, if I need computer work, is the dealership/manufacturer the only place to get this kind of work done? Are there independent mechanics that do that kind of work?? Thanks for any help I can get. And this is kinda an ASAP thing too .. thanks ...
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I have a 1999 Chevrolet Silverado Z71. Sometimes it doesnt want to start. After you crank the ignition for a few seconds if finally starts. I have replaced the fuel pump/sending unit, and the filter. Still no luck. Also my fuel gauge is acting funny. When you close the drivers side door, and after the dome light goes off, the fuel gauge goes back up to where it was when the truck was running. I have seen the same posting, but havent seen any solutions. Please if anyone has any ideas let me know.
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Can anyone tell me how many miles you have to drive after your codes have been cleared, and problems fixed, before you can run through emmissions. I just cleared and repaired air intake check valve(passengers side),and cleared code but emmissions station says I have to drive or wait or whatever, till whenever? I still have to retest, but when?
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Replying to: rcf8000 (Sep 22, 2006 7:17 pm) |
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I have a 2006 Silverado LS 1500 WD ext cab, a 6 cylinder with 4 speed auto transmission. Everything works fine except when I'm using cruise and doing about 55 and I reach a small hill, the tach jumps to twice the RPMs as the transmission shifts, then the RPMs abruptly drop to normal again. The tach is always in the safe zone. The dealer said (without driving the truck) that this was normal, but it's kinda annoying. Is there a problem?
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| I have a 2006 gmc duramax diesel 2500hd the change fuel filter comes on the display so I replaced it then did what the owners manual wrote to reset turn on ignition to run wait 5 sec. the push brake and gas peddle down at same time for 10 seconds it is reset but it dont seem to work is this reset by a timer or a senser? | |
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