<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:14998b79-faf9-460d-86f6-ad80e4032a31,g:ead662e7-b1e4-4c06-b9fd-e27bc9a64e83-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.paalp.com/role/CoverPage" xlink:type="simple" xlink:href="pagp-20250509.xsd#CoverPage"/>
  <link:presentationLink xlink:role="http://www.paalp.com/role/CoverPage" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_2951becb-1f28-4e7e-9e3c-f412e0909a65" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_DocumentType_2951becb-1f28-4e7e-9e3c-f412e0909a65" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_97eca95e-e0b7-4a2a-b5de-956abd67fae8" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_DocumentPeriodEndDate_97eca95e-e0b7-4a2a-b5de-956abd67fae8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_eb72c62b-4461-4a40-86b3-b5d48ff21144" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_EntityRegistrantName_eb72c62b-4461-4a40-86b3-b5d48ff21144" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_8b866c91-4251-4482-99e6-0a45ffc47d42" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_EntityIncorporationStateCountryCode_8b866c91-4251-4482-99e6-0a45ffc47d42" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_482347eb-721f-42aa-a54b-377eebd87ba2" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_EntityFileNumber_482347eb-721f-42aa-a54b-377eebd87ba2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_eb5cb2d9-69a6-4c8f-9fd5-efb8b6382f87" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_EntityTaxIdentificationNumber_eb5cb2d9-69a6-4c8f-9fd5-efb8b6382f87" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_85f1eb28-8c44-401d-99b5-96a7018c7332" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_EntityAddressAddressLine1_85f1eb28-8c44-401d-99b5-96a7018c7332" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_2587398a-925d-43df-b7d4-a13e6e9770ab" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressAddressLine2"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_EntityAddressAddressLine2_2587398a-925d-43df-b7d4-a13e6e9770ab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_f0a80527-5ee2-4008-8d7c-6eeee5b6af11" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_EntityAddressCityOrTown_f0a80527-5ee2-4008-8d7c-6eeee5b6af11" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_58004317-4de3-4ee0-9c25-d77da60e0658" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_EntityAddressStateOrProvince_58004317-4de3-4ee0-9c25-d77da60e0658" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_e4d9f3d7-ea9b-4995-a27a-d81b515af30d" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_EntityAddressPostalZipCode_e4d9f3d7-ea9b-4995-a27a-d81b515af30d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_75b58d73-cc8b-4d71-b54b-a08d553c6504" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_CityAreaCode_75b58d73-cc8b-4d71-b54b-a08d553c6504" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_66ff71e3-a59d-4039-a630-22cd1b795ad7" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_LocalPhoneNumber_66ff71e3-a59d-4039-a630-22cd1b795ad7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_9aa92852-181d-45b8-8042-0e38c84cfc12" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_WrittenCommunications_9aa92852-181d-45b8-8042-0e38c84cfc12" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_b73878c7-f15d-4b6d-86da-cc67cef9958f" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_SolicitingMaterial_b73878c7-f15d-4b6d-86da-cc67cef9958f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_7feecb0e-23f1-4fab-9047-d99535364d88" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_PreCommencementTenderOffer_7feecb0e-23f1-4fab-9047-d99535364d88" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_c922b0ba-429b-4a6f-a136-112245e8db5f" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_c922b0ba-429b-4a6f-a136-112245e8db5f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_d4ee7ee3-7fd7-4981-87c4-924acfdb58e5" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_EntityEmergingGrowthCompany_d4ee7ee3-7fd7-4981-87c4-924acfdb58e5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_a8006b73-501e-47c8-b38a-1c102082b629" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_Security12bTitle_a8006b73-501e-47c8-b38a-1c102082b629" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_13a0196f-15e9-42bf-a08f-3208f804b77e" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_TradingSymbol_13a0196f-15e9-42bf-a08f-3208f804b77e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_09e110f2-7f89-4ba8-9003-fcc8579de859" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_SecurityExchangeName_09e110f2-7f89-4ba8-9003-fcc8579de859" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_bb904e40-6a65-44f0-a59e-823e0b13ab8c" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_EntityCentralIndexKey_bb904e40-6a65-44f0-a59e-823e0b13ab8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_28192287-de07-4e40-9a15-ee9af752f004" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_278a2e39-f4ea-46d0-a056-08337d6c267e" xlink:to="loc_dei_AmendmentFlag_28192287-de07-4e40-9a15-ee9af752f004" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
