5.3 swap obd help
Thread Starter
Teching In
Joined: Feb 2018
Posts: 13
Likes: 1
5.3 swap obd help Ok guys here’s my deal. I’m doing a 5.3, 4L60 swap into a 69 Impala convertible. What I’ve done is used a 2001 Silverado 2wd, for a donor. I’ve used the engine, transmission, wiring harnesses, instrument panel, steering column. I just unplugged or cut out the airbags, abs system, and the hvac system. Now I’ve got everything in and I thought working but my scanner won’t communicate? I’ve checked all fuses and relays. Does it need the abs or airbag modules to communicate?.
TECH Fanatic
Joined: Dec 2017
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From: Bossier City, Louisiana
Not sure but there's absolutely a few things inside your powertrain control module (PCM) that will need to be deleted before your Impala will start - Vehicle Anti Theft System (VATS). You will also need at least one O2 sensor functioning to keep the check engine light out.
Do you have power to the PCM? Check it with a multimeter.
Rick
Do you have power to the PCM? Check it with a multimeter.
Rick
TECH Fanatic
Joined: Oct 2014
Posts: 1,220
Likes: 179
From: Virginia
Ok guys here’s my deal. I’m doing a 5.3, 4L60 swap into a 69 Impala convertible. What I’ve done is used a 2001 Silverado 2wd, for a donor. I’ve used the engine, transmission, wiring harnesses, instrument panel, steering column. I just unplugged or cut out the airbags, abs system, and the hvac system. Now I’ve got everything in and I thought working but my scanner won’t communicate? I’ve checked all fuses and relays. Does it need the abs or airbag modules to communicate?.
ABS does communicate with the PCM for traction control though, but again, shouldn't prevent it from working. It sounds like you have an electrical or sensor problem.
Thread Starter
Teching In
Joined: Feb 2018
Posts: 13
Likes: 1
I have all the anti theft in place by ususing the factory column. Most all of the factory wiring is in place too. I have power to the scanner on but it won't communicate? I'll check the data wire today
TECH Fanatic
Joined: Oct 2014
Posts: 1,220
Likes: 179
From: Virginia
Once you get em talking you can relink VATS or just delete it. You did a pcm swap so I'm assuming this might be a problem later.
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Verdad Gallardo TECH Fanatic
Joined: Oct 2014
Posts: 1,220
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From: Virginia
I use hp tuners for all of that. It pays for itself once you figure out the ins and outs of tuning. Well worth it imo. I'm sure efi live and others could do it too though.