Question about 2007 Chevrolet Colorado (Extended Cab) New Cars
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Posted on Jan 02, 2017
The evap purge solenoid is located on the intake manifold. The evap vent valve is located on the side of the fuel tank. If you have a P0449 or P0452 (I think) DTC, it will be the one on the tank that you need to replace.
Posted on Sep 01, 2009
SOURCE: check engine light is on
Go to Autozone or Oreillys for a free scan. The scanner will tell you exactly what is wrong. Now sometimes a Code will show a problem in the Purge system and its just a loose gascap. But other times it can be a small leak in a vent hose.
The Autoparts people can help you find the problem and sell you some of the parts to correct it. After you add a new part you need to clear the onboard computer with a scanner or unhook the NEG cable for 10 minutes.
Posted on Sep 05, 2010
In the rear up high near fuel tank or along frame rail,
among the EVAP System Components
Need a diagram of system to find & test components
Really need a scan tool & EVAP Smoke machine,
to test & find out, if you have anything that doesn't work
I assume you know codes do not tell you what is wrong
or what to replace,vehicles do not self diagnose themselves
and likely never will
Posted on Jun 14, 2011
SOURCE: code p0449 came on in
I am sending you a little info on your problem.. Hope it helps.. Best of Luck..
2006 Chevrolet Colorado LT 2.8L, Vin 8, Eng Cfg L4 Customer Concern: Current Powertrain Control Module (PCM) code P0449. Tests/Procedures: 1. Inspect the evaporative vent solenoid, near the fuel tank and evaporative canister. Look for wire damage, corrosion.
2. Check voltage to the solenoid on the Orange wire. It should be battery voltage, backprobing. If not, check the voltage level on the CAN VENT fuse, #69 in the Underhood Bussed Electrical Center (UBEC).
3. Cycle the evaporative vent solenoid with a scan tool. The solenoid should click.
4. Backprobe the White wire, pin 22 of the blue PCM connector. The voltage on this wire should be battery voltage with the solenoid off and close to 0 volts with the solenoid on. Potential Causes: Evaporative Vent Solenoid
Tech Tips: The evaporative vent solenoid is attached to the side of the evaporative canister above the spare tire.
Posted on Aug 21, 2011
Tips for a great answer:
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An EVAP canister, vent hose, or vent solenoid valve that has restricted flow may cause this DTC to set. Using a purge solenoid command with a scan tool will allow vacuum to be applied to the system instead of pressure. With the engine running, the EVAP canister vent solenoid valve open, and the EVAP canister purge solenoid valve commanded to 100 percent, the fuel tank vacuum should not increase to more than 5 inches H2O.
An EVAP canister filter that is restricted can cause this DTC to set. Refer to Evaporative Emission Canister Replacement .
Disconnecting one component at a time while the EVAP system is under flow will help to pinpoint a restriction in the system
Do you have a scan tool that reads data PID'S ?
Your FTP - fuel tank pressure sensor could be at fault !
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