07 TB 4.2: Changed Evap Vent Solenoid - Engine won't start

billws

Original poster
Member
Dec 24, 2012
1
Hello all. Thanks for having me on the forums and thanks in advance for any help you may render.

Some time back, my 2007 TrailBlazer threw code P0449. I ran with it for a several thousand miles with no noticeable negative consequences beyond diminished gas mileage.

After a little research both online and at the parts store, I sprung for the Evap Vent Solenoid (<$25.)

Despite having to wiggle my sizable self under the back of the TB, it was one of the easiest parts swaps I have ever done. One vac hose, one electrical connector, and the whole thing went on a metal piece that didn't even use any bolts or screws. Piece of cake!

I disconnected the battery for a few minutes, reconnected, turned the key to run for a few minutes without starting the engine, then turned the key to start.

It didn't start. It wouldn't start.

The engine will turn, but will not start.

Here's what I know for sure:
1. Other than being due for an oil change, the TB had no other problems or symptoms I know anything about.
2. I checked my electrical and vacuum connections on the new part, they seemed fine. I took the new part off and put the old one on. It still wouldn't start.
3. Through all this, despite the close quarters, I did not abuse the vacuum line or electrical wires, and I don't believe I pulled on them in any way that would have caused a fault.
4. I have disconnected the battery for over a half hour, reconnected. No change in the problem.

Any helpful information, insight, or wild guesses will be much appreciated.

Thanks

Billy
 

limequat

Member
Dec 8, 2011
520
You must have missed something along the way. A misplaced tool can blow a fuse, etc.

Start with the basics. Do you have a check engine light with key on engine off? Any DTCs?
Check for fuel pressure. Check for spark. Will it start on ether?
 

jeffgutierrez

Member
Dec 30, 2012
21
Was this problem ever solved? If so what was the issue? Also did the new part fix the code? Just curious. I have the same code going on right now
 

Forum Statistics

Threads
23,712
Posts
642,481
Members
19,231
Latest member
kreig Blacke

Members Online

No members online now.