PCM swap

Asked by Mar 07, 2016 at 10:36 PM about the 1997 Chevrolet Lumina LS Sedan FWD

Question type: Maintenance & Repair

I just swapped my pcm on my 97 lumina 3100 with
a pcm from a 97 Buick le sabre. Is there a way to
make this work without reprogramming or
flashing? I'd rather not have to get it towed to the
shop and spend $120 for them to flash it.
Swapping the pcm fixed all my problems except
for the fact it will not start but will turn over and I
have spark,fuel, and air flowing. Seems the pcm is
not allowing my injectors to pulse.

5 Answers

85,635

Verify that the injectors do not pule, check with a test light.

Verified no pulse

85,635

Ok, you have something with the security system being activated. When the security is activated, it shuts down the injectors. I suspect changing the pcm it is not recognizing the chip that is in the key, or something. Unfortunately I do not know much about security system, just that I know it is activated. If you have that other car you could try and take out the key lock & cylinder and install into your car. I would investigate this further.

The security light shuts off after a few seconds and the passkey has been bypassed for remote access by the previous owner. Before I swapped the pcm I wasn't getting any power to my fuel pump and the computer wouldn't link up to obd scanners. Now I have power to fuel pump and can connect with my scan tool and the service engine light is on but there are no codes.

85,635

Honestly, I don't know anymore than what I have told you. The guy who knows security systems & more on pcm swaps has not ben on lately. js08016 is his handle, maybe try and find his garage and shoot him an e-mail. Sorry.

Your Answer:

Lumina

Looking for a Used Lumina in your area?

CarGurus has 108 nationwide Lumina listings and the tools to find you a great deal.

ZIP:

Chevrolet Lumina Experts

  • #1
    90V6RedHotLuminaEuro
    Reputation
    1,270
  • #2
    John Saffrahn
    Reputation
    1,110
  • #3
    11jonny11
    Reputation
    990
View All

Related Models For Sale

Used Chevrolet Impala
517 Great Deals out of 26,173 listings starting at $995
Used Chevrolet Malibu
623 Great Deals out of 51,869 listings starting at $1,550
Used Chevrolet Monte Carlo
3 Great Deals out of 987 listings starting at $1,125
Used Buick Century
555 listings starting at $1,995
Used Chevrolet Camaro
262 Great Deals out of 27,422 listings starting at $2,900
Used Chevrolet Corvette
86 Great Deals out of 15,159 listings starting at $4,499
Used Toyota Camry
882 Great Deals out of 72,153 listings starting at $1,000
Used Ford Taurus
205 Great Deals out of 16,251 listings starting at $500
Used Honda Accord
719 Great Deals out of 103,450 listings starting at $849
Used Ford Mustang
308 Great Deals out of 40,433 listings starting at $1,000
Used Pontiac Grand Prix
13 Great Deals out of 1,691 listings starting at $1,500
Used Buick LeSabre
1,343 listings starting at $1,499

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.