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Gm code po620 - 2000 Chevrolet Venture

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Typically issue with alternator. Will have to check wiring to the backe of it at the multiwire plug.

Posted on Jan 17, 2013


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Can anyone tell me what this is on my suburban?

That is the ODB11 Code Reader Port. When your engine malfunction light comes on, you attach a code reader to that socket and the machine give a P Code. That code tells the problem as stated from the ECM (engine control module.

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GM Trouble Code Info ... Diagnostic trouble codes may be cleared by disconnecting the battery ground cable ..... VIN T, CHEVROLET Suburban, GMC Suburban.

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Mar 23, 2017 | Cars & Trucks

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I have a 2008 chevy impala flex fuel v6 3.5 I had the code po303 come up. So I changed spark plugs and wires and ignitor coil pack. But still on.

Bummer deal! Disconnect the negative battery cable for 30 seconds or so an reconnect it. This clears the codes and it takes several days for the computer to relearn. Then see if a code lite come on and check that out, if so. Did you gap the plugs properly? too wide or too narrow will trigger a code. A dirty combustion area results from your problem. I always use the product treatment at this web page to be sure its not residues causing your problem in one area or another. Hope this helps.

May 13, 2015 | 2008 Chevrolet Impala

1 Answer

P0620 generator control circuit

code po620 refers to alternator control--circuit malfunction===causes--wiring---alternator --- battery---ECM
Check that the wiring is good and terminals are tight. Have a load test done on the battery to check for failing cell that will not take a charge. Ensure that the battery posts and terminals are shiny clean. Have the alternator bench tested for out put.

Feb 23, 2014 | 2003 Oldsmobile Silhouette

1 Answer

Maifunction indicator light comeing on

Trouble Code: P0340

No Camshaft Position Sensor Circuit Failure

Possible Causes:

CMP Sensor connector is damaged, open or it is shorted.CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit.CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage.CMP Sensor ground circuit is open.CMP Sensor is damaged or has failed.CKP Sensor is damaged or has failed.PCM has failed.Trouble Code: P0700

Automatic Transmission Control System Malfunction

Possible Causes:

.The presence of this code means the TCM detected a problem.TCM related Sensor has solenoid is damaged or has failed.This code is for information only - check for other TCM codes.TCM or PCM has failed.Sorry but the PO620 is not listed.

Nov 05, 2012 | 2004 Jeep Grand Cherokee

1 Answer

I get the code PO496 on my 2006 GMC Envoy. I have replaced the gas cap and cleared the code but it comes back. Any thoughts?

Related Searches: GM Parts - GM History - GM Diagnostic Codes - More... Web Results 1-10 of 266 Code P0496 - Evap system error - SaturnFans Forums
Reading on the P0496 code, I don't know for certain that the solenoid on the manifold is your problem. On my Impala and

Feb 27, 2011 | GMC Envoy XL Cars & Trucks

1 Answer

How i know what type engine my chevy cobalt has???

Normal 0 Vehicle Identification Numbers (VIN codes)/GM/VIN Codes
GM has traditionally encoded the platform as the fourth character of the VIN. Other content includes an engine code the eight character, model year 10 th character and so on.
Take note of the eight character and call a GM dealer.

Aug 14, 2010 | 2006 Chevrolet Cobalt

2 Answers

My radio always locks out when the battery dies. We were given the code but its been misplaced and now they want to charge $75. Is there a place to get it? thank you!

No. You will need to take it to a gm shop to have it fixed. Each time there is a differant code in the radio, the tech will get that code and will call gm headquarters and get the special unlock code. You have to be a gm cerified tech to get the code from gm. I wish they would made this system more costomer friendly, but that's what they decided.

Oct 20, 2009 | 1999 Pontiac Grand Am GT

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