<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-12-31</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0001160513</issuerCik><issuerName>SUNTRON CORP</issuerName>        <issuerTradingSymbol>SUNN</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001047752</rptOwnerCik><rptOwnerName>BRASWELL ALLEN S JR</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>2501 WEST GRANDVIEW</rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>PHOENIX</rptOwnerCity><rptOwnerState>AZ</rptOwnerState><rptOwnerZipCode>85023</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><derivativeTable><derivativeTransaction><securityTitle><value>Director Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>4.3000</value></conversionOrExercisePrice><transactionDate><value>2003-12-31</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>300.0000</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><footnoteId id="F1" /></exerciseDate><expirationDate><value>2013-12-31</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>300.0000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>300.0000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">20% of the options vest and become exercisable on each anniversary of the grant date.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>James A. Doran, Attorney-in-Fact</signatureName><signatureDate>2004-01-05</signatureDate></ownerSignature></ownershipDocument>

