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Engine trouble codes

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Old May 14, 2017 | 07:36 AM
  #1  
Stevie-d's Avatar
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Joined: 05-14-2017
Posts: 2
From: New Tecumseth, Ontario, Canada
Engine trouble codes

Good day all,

I'm having a heck of a time with engine codes (P2135,P2176) constantly reoccuring. Of course causing reduced engine power. Not so good on the major highways. Help please! I changed the throttle body already. Thanks!
Old May 14, 2017 | 08:24 AM
  #2  
Oldblue's Avatar
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Joined: 10-13-2011
Posts: 40,083
From: Welland,Ont Canada
Welcome to the site!
The P2135 pertains to the throttle pedal, most likely a loose connection per

https://www.obd-codes.com/p2135

The P2176 is addressed here, another loose connection pin in the harness connections

https://www.chevyhhr.net/forums/prob...reduced-42746/
Old May 14, 2017 | 08:49 AM
  #3  
donbrew's Avatar
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Joined: 01-23-2009
Posts: 26,532
From: Fredericksburg,VA
This wire is usually chafed.
Engine trouble codes-wire.png
Old May 15, 2017 | 07:28 PM
  #4  
Stevie-d's Avatar
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Joined: 05-14-2017
Posts: 2
From: New Tecumseth, Ontario, Canada
Many thanks for your pics and advice, This must be a handed down problem from the cobalt, G5 and who knows what else. I guess I'll start here. Trying to keep the faith in North America vehicles.
Old May 16, 2017 | 06:59 AM
  #5  
Oldblue's Avatar
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Joined: 10-13-2011
Posts: 40,083
From: Welland,Ont Canada
The HHR is Saab based, Per

https://en.m.wikipedia.org/wiki/GM_Ecotec_engine

These are stout little trucklets I've got over 380,000 Kim's on mine with no major issues.
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