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Proportioning Valve: Removal

WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the air cleaner housing from the engine compartment.
    1. Remove the fastener from the coolant tank. Remove the coolant tank and set aside.
    2. Remove the 3 bolts from the support brace and remove the brace. Disconnect the mass air flow (MAF) sensor electrical connector.
    3. Loosen the 2 clamps on the AIR intake duct/MAF sensor assembly. Remove the air inlet duct/MAF sensor assembly.
    4. Unsnap the 2 latches and remove the air cleaner housing cover. Remove the air filter element.
    5. Unsnap the latch on the upper cover and remove the cover.
    6. Carefully remove the powertrain control module (PCM) leaving the 2 harnesses connected and set aside.
    7. Remove the 2 bolts from the air cleaner assembly and remove the housing.
  2. Remove brake pipes from master cylinder.
  3. Disconnect the brake pipes from the proportion valve.
  4. Remove the nuts to the proportion valve mounting bracket. See Fig 1 . Remove the proportion valve and bracket.
Fig 1: Identifying Proportioning Valve Mounting Bracket
G00307642Courtesy of GENERAL MOTORS CORP.
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