Re: P0449 on 2007 Acadia

did you reset the light?
or have you given it enough drive cycles to auto check/reset the light if it has been fixed?

 

Re: P0449 on 2007 Acadia

Hi rbarrios. I cleared the code after replacing the first part. The check engine light came on shortly after I restarted the truck. I've also driven it for weeks since then and the light remains on with the P0449.

 

Re: P0449 on 2007 Acadia

Rockauto.com doesn't list an AC Delco option but when I searched GMPartsDirect.com, it showed that the AC part numbers I'd need would need are:
20907779 (canister valve solenoid)
19257603 (wiring harness adapter)

The weird thing is that Rockauto sells both parts. Not sure why it doesn't list them for the Acadia. Anyone know why or have any experience with this repair?

 

Re: P0449 on 2007 Acadia

I've replaced the gas cap, vapor canister purge valve (under the hood), and the canister valve solenoid (on top of gas tank) but still no luck. Anybody have any other ideas?

 

Re: P0449 on 2007 Acadia

I've replaced the gas cap, vapor canister purge valve (under the hood), and the canister valve solenoid (on top of gas tank) but still no luck. Anybody have any other ideas?

Wondering the same thing

 

Re: P0449 on 2007 Acadia

I've replaced the gas cap, vapor canister purge valve (under the hood), and the canister valve solenoid (on top of gas tank) but still no luck. Anybody have any other ideas?

Did you clear the code?

 

Re: P0449 on 2007 Acadia

Yes. I cleared the code but it came right back.

 

Found 2 damaged wires in harness from gas tank to connector-plug under driver's door (something must've kicked up from road and sliced through wire loom). Repaired wires, cleared code, and it seems to have solved the problem.

 

Found 2 damaged wires in harness from gas tank to connector-plug under driver's door (something must've kicked up from road and sliced through wire loom). Repaired wires, cleared code, and it seems to have solved the problem.

:thumb: :thumb:

 

Found 2 damaged wires in harness from gas tank to connector-plug under driver's door (something must've kicked up from road and sliced through wire loom). Repaired wires, cleared code, and it seems to have solved the problem.

this connector?

if so.... that connector will cause

Engine is hard to start • Engine will not start • Engine starts, then stalls • Fuel gauge is inoperative or fluctuates • Service Engine Soon/Check Engine light is illuminated

 

Yep. That's the connector I mentioned under the driver's door. Here's a pic showing the damaged wires I found in the harness leading up to it.

 

this connector?

if so.... that connector will cause

Engine is hard to start • Engine will not start • Engine starts, then stalls • Fuel gauge is inoperative or fluctuates • Service Engine Soon/Check Engine light is illuminated

RB, why does the connector in the pic appear partially unplugged?

 

RB, why does the connector in the pic appear partially unplugged?

when that connector looks like that---
it leads to the mentioned issues.

 

Inoperative Fuel Gauge and Hard Start/No Start Condition
June 18, 2012

Some 2008-2012 Enclave, 2009-2012 Traverse, 2007-2012 Acadia and 2007-2010 Outlook models may exhibit one or more of the following conditions:

• Engine is hard to start • Engine will not start • Engine starts, then stalls • Fuel gauge is inoperative or fluctuates • Service Engine Soon/Check Engine light is illuminated



These conditions, which may be intermittent and have various DTCs set, may be due to the fuel tank harness to body harness retainer slipping on the tubing, putting pressure on the harness and causing connector X305 to become partially separated or not fully seated. (Fig. 13)

Inspect connector X305 to make sure that it is fully seated. If the connector is not fully seated, inspect the terminals at connector X305 for corrosion. If the terminals show signs of corrosion, replace the corroded terminals.



Remove the wire harness retaining clip from the steel lines (Fig. 14, Position 1) and reposition it in front of the steel line support to prevent it from sliding. (Fig. 14. Position 2)

 

That was posted long ago, I believe.

Now, warbiz needs to figure out how to get pics to show in his posts!

 

yes- I had posted this a while back.

 

That was posted long ago, I believe.

Now, warbiz needs to figure out how to get pics to show in his posts!

I figured out how to get the pic to display (since attaching the file didn't work).

 

I figured out how to get the pic to display (since attaching the file didn't work).

:thumb: :thumb:

 

Please, someone has to have a part number for this wiring harness, or exact name...where I can order one, etc.

 

Search the 'net for "(insert year) acadia fuel tank wiring harness" and go shopping from the results.