motor change suburban 5.7 2 Buick 5.7

Asked by Carl Jan 06, 2016 at 05:56 PM about the 1993 Chevrolet Suburban C1500 RWD

Question type: Maintenance & Repair

I changed the motor of a 93 suburban to a 93
Buick Roadmaster 5.7 I can't get the service
engine Light to go off I've gone through all the
procedures and I keep getting code numbers 42
and 43 what do I do to get the light to go off so I
could get smog check and my tags

1 Answer
30,530

mikeatpriestlake answered 8 years ago

the 42 means a bad ignition control module or bad connections. since you did a swap out, I would check and clean the connections first. the 43 is a knock sensor or a problem in the computer with the MEM cal. that is the calibration between the engine management systems and the computer. you may have to change your mem cal or your whole computer. The same computer is used in lots of gm vehicles, but the PROM (programmable read only Memory ) or your MEM-cal, which ever you have are meant for each specific vehicle.

Mark helpful

Your Answer:

Related Questions

  • motor change suburban 5.7 2 Buick 5.7 1 Answer

    I changed the motor of a 93 suburban to a 93 Buick Roadmaster 5.7 I can't get the service engine Light to go off I've gone through all the procedures and I keep getting code numbers 42 and 43 what...

    1993 Chevrolet Suburban C1500 RWD

    -

    Maintenance & Repair

  • Will a 1996 Tahoe Vortec 5.7 motor and 4X4 transmission fit MY 2004 Suburban? 1 Answer

    Will a 1996 Tahoe Vortec 5.7 motor and 4X4 transmission fit MY 2004 Suburban?

    2004 Chevrolet Suburban 1500 4WD

    -

    Maintenance & Repair

  • 1999 suburban 5.7 l smells.like gas really bad miss 1 Answer

    99 suburban 5.7 l smells like gas really bad hard to crank drives with a really bad miss going through gas like crazy HELP !!

    1999 Chevrolet Suburban K1500 LT 4WD

    -

    Maintenance & Repair

  • k1500 suburban,5.7 4x4 rough idle 11 Answers

    I have a problem with my suburban it idles rough and only stays on when gas pedal is being pushed,I've changed out rotor distrib cap,iac and fuel pump with no change please help it's the only vehi...

    1995 Chevrolet Suburban K1500 4WD

    -

    Maintenance & Repair

  • 99 chevy suburban w/ 5.7 litre 350 5 Answers

    I have a 99 chevy suburban. I am having a problem with the oil pressure gauge. When I push the gas and let off as to coast for a bit the oil pressure gauge drops completely and the check gauges li...

    1999 Chevrolet Suburban K1500 4WD

    -

    Maintenance & Repair

Shortcuts

Search Chevrolet Suburban Questions

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    3,090
  • #2
    JimO65
    Reputation
    2,400
  • #3
    Rowefast
    Reputation
    2,150
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Yukon
11 Great Deals out of 952 listings starting at $1,225
Used Ford F-150
338 Great Deals out of 15,311 listings starting at $1,712
Used GMC Sierra 1500
147 Great Deals out of 7,209 listings starting at $3,950

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. Content will be removed if CarGurus becomes aware that it violates our policies.