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Where is the smog pump located?

Tiny
VAJIMM1965
  • MEMBER
  • 2013 CHEVROLET IMPALA
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
I am replacing the secondary air injection pump and need to know where it is. Car is the LT model.
Tuesday, September 29th, 2020 AT 3:59 AM

9 Replies

Tiny
STEVE W.
  • MECHANIC
  • 12,958 POSTS
It is located on the front of the engine between the converter and the transmission cover. To remove it you need to remove the radiator air shroud and then the air tubes. What code are you getting to replace the pump? The common codes are for the control valves more than the pump itself.
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Tuesday, September 29th, 2020 AT 7:40 AM
Tiny
VAJIMM1965
  • MEMBER
  • 5 POSTS
The screenshot shows the codes. I’ve already replaced the Canister Vent Valve Solenoid and Canister Purge Valve and it still cranks but won’t start.
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Tuesday, September 29th, 2020 AT 8:38 AM
Tiny
STEVE W.
  • MECHANIC
  • 12,958 POSTS
P0411 can be the pump but it can also be that the pump had gotten water inside it and that is causing the problem. If that scan tool has bidirectional controls you can use it to turn on the pump while you watch the MAP sensor reading. The MAP should change by about 1.5 psi above the base reading when the pump is on. If it does the pump isn't the problem and it's more likely in one of the control valves. However none of those codes should keep the engine from starting. Try spraying some starting fluid into the intake and see if it at least fires and runs for a couple seconds as you may have other issues not related to those codes.
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Tuesday, September 29th, 2020 AT 9:35 AM
Tiny
VAJIMM1965
  • MEMBER
  • 5 POSTS
Steve W,

I tried the starting fluid and it didn’t work. When I was taking the flex hose off to get access to the intake I noticed liquid in the bottom of the hose. Is that normal?
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Wednesday, September 30th, 2020 AT 9:46 AM
Tiny
STEVE W.
  • MECHANIC
  • 12,958 POSTS
No that isn't normal. However having the intake suck in water is unfortunately a common thing. Because it didn't fire on the spray I suspect you have more issues than just the codes. What was it doing prior to needing any work? Was this a running car and then it shut down or?
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Wednesday, September 30th, 2020 AT 5:32 PM
Tiny
VAJIMM1965
  • MEMBER
  • 5 POSTS
Yes, I drove 15 miles home after filling up with gas and 2 hours later it wouldn’t start. I had it towed yesterday to a repair shop and they determined that the fuel pump was bad and are replacing it. They should have it done on Friday, I’m waiting for the results.
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Thursday, October 1st, 2020 AT 5:30 PM
Tiny
STEVE W.
  • MECHANIC
  • 12,958 POSTS
A bad pump would do that, but it still should have at least fired on spray. Please keep us informed on the results.
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Thursday, October 1st, 2020 AT 6:48 PM
Tiny
VAJIMM1965
  • MEMBER
  • 5 POSTS
Steve W,
It was the fuel pump!
Thanks to a AAA Car Care Center (Suffolk, VA) my Impala is back in the road!
Thank you Steve W. For your assistance.
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Saturday, October 3rd, 2020 AT 7:02 PM
Tiny
STEVE W.
  • MECHANIC
  • 12,958 POSTS
Thank you for the update and thank you for using 2CarPros.
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Saturday, October 3rd, 2020 AT 7:24 PM

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