Car stalls and will not start

DENNIS HAZARD

MEMBER
2007 CHEVROLET IMPALA
3.5L
6 CYL
2WD
AUTOMATIC
175,000 MILES

Car stalled and now won’t start. Getting engine power reduced on dash, codes p0606 and p1682. Can you help?

Monday, April 22nd, 2019 AT 2:54 PM

8 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good evening,

The 606 is the key. The engine control module or the ECM has failed internally and needs to be replaced. I would not even address the other code unitl the ECM is replaced and programmed.

Roy

1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life, if required.
2. Disconnect the negative battery cable.
3. Remove the left front inner fender brace.
4. Remove the air cleaner assembly.
5. Disconnect the ECM electrical connectors (2).

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6. Remove the ECM from the air cleaner lower housing.

Installation Procedure

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Saturday, March 6th, 2021 AT 12:34 PM

DENNIS HAZARD

MEMBER
22 POSTS

Are the EMC's you can buy online legit? They say they're programmed with your VIN number. My son just had his transmission replaced and doesn't have a lot of money so are we okay with these?
Thanks

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Saturday, March 6th, 2021 AT 12:34 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

Yes, they are. Go for it.

Roy

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Saturday, March 6th, 2021 AT 12:34 PM

DENNIS HAZARD

MEMBER
22 POSTS

Okay, thank you. Also the warning center on the dash said the engine power is reduced.

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Saturday, March 6th, 2021 AT 12:34 PM

DENNIS HAZARD

MEMBER
22 POSTS

I have people also telling me it’s the ignition. I’m trying to help my son and he’s just replaced the transmission and doesn’t have a lot of money. So I don’t know what to do.