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Makes 🢒 Chevrolet 🢒 2007 🢒 Lumina VE 🢒 Bulletins 🢒 Variable Intake Manifold (VIM) Amplifier Deletion

Variable Intake Manifold (VIM) Amplifier Deletion

Subject:Variable Intake Manifold (VIM) Amplifier Deletion

Models:2007 Chevrolet Caprice, Lumina (Export)
with HFV6 Engine (RPO LE0)
Built After VIN Breakpoint 7L902727


A Variable Intake Manifold (VIM) amplifier is installed in early VE & WM V6 vehicles to amplify signals between the VIM (or IMRC - Intake Manifold Runner Control) and the ECM. The VIM amplifier is connected (by wiring) between the VIM valve on the rear of the intake manifold and the ECM. The VIM amplifier is to be deleted from vehicle production as detailed below and the VIM valve will then be connected directly to the ECM as a result of software and hardware improvements.

As software has now been developed which does not require the VIM amplifier, all software released via TIS 2000 from now on will not support VIM amplifiers. It will therefore be necessary when programming an ECU in vehicles fitted with VIM to first disable the VIM as shown below.

The service procedure detailed below will be required ONLY if one of the following conditions occurs:

    • The ECM is re-programmed (SPS) and the vehicle is equipped with a VIM amplifier module.
    • "Ensure VIM Amp Rework is Completed" is displayed in TIS when performing SPS programming.
    • The ECM is replaced and the vehicle is equipped with a VIM amplifier module ("Ensure VIM Amp Rework is Completed" will be displayed on the Tech 2®).

Important: Failure to perform the following procedure when one of the above conditions occurs will result in customer complaints due to unnecessary DTCs setting (DTC P2008) and the Check Engine light illuminating.


    Object Number: 2007645 Size: SH
    (1)Align "notches"
    (2)Mark rack and connector when handle is fully clockwise
  1. 1. At the RH side of the engine compartment, remove the larger connector - J1 (X1) - from the Engine Control Module (ECM). As per the photo above, fully rotate the handle and use a marker to mark the "fully open" position of the rack and connector as shown (to allow easy reinstallation). Remove the handle by lining up the notches and levering with a flat head screw driver.

    2. Object Number: 2007646 Size: SH
  2. Remove the rack from the connector.

    3. Object Number: 2007648 Size: SH
  3. Remove the outer case by levering each of the corners of the connector with a flat head screw driver.

    4. Object Number: 2007649 Size: SH
  4. Remove the terminal locking key by sliding a flat head screw driver underneath the top of the key and levering upwards.

    5. Object Number: 2007650 Size: SH
  5. Locate the terminal at position 12 on the J1 (X1) connector. Note that terminal numbers are marked on the base of the connector.
  6. Carefully insert a terminal extraction tool and remove the terminal from the back of the connector.

    7. Refer to the "Terminal Extraction Tools" section below for details of the tool required. A terminal extraction tool MUST be used. Do not use other tools as damage will occur and replacement terminals are not yet available.


    Object Number: 2007652 Size: SH
  7. Relocate terminal 12 and insert into empty terminal position 14.
  8. Following relocation of the terminal, reassemble the connector components in the reverse order (as shown in Steps 1 to 4).

    9. Object Number: 2007654 Size: SH
  9. Locate the VIM amplifier behind the inlet manifold:
    10. 9.1. Remove the insulator behind the manifold to gain access to the VIM amplifier.
    9.2. Cut the tie strap retaining the VIM amplifier to the wiring harness conduit (take care not to damage the conduit or harness).
    9.3. Pull the VIM amplifier out to allow removal.
  10. Remove the VIM amplifier from the harness and fit the "jumper" connector (supplied in connector kit, P/N 92202396).
  11. Return the connector and harness to the position the VIM amplifier was removed from and tie strap the connector to the harness conduit (as the VIM amplifier was installed).

Terminal Extraction Tools

Extraction tools are available from a number of suppliers of electrical terminal tools or are supplied in proprietary terminal tool kits. The details of two available tools are:

Bosch Tool:

Part Number: 1928 498 218

SPx Tool:

Part Number: J-38125-24

To confirm an acceptable terminal removal tool, the following dimensions are provided:

Square Section: 0.7mm wide x 0.5mm thick

Length required: 7.0mm

Parts Information

Part Number

Description

Qty

92202396

Connector Kit

1

Warranty Information

For vehicles repaired under warranty, use:

Important: The following warranty should be claimed in addition to claim for ECU replace/reprogram.

Labor Operation

Description

Labor Time

N6610

Wiring and/or Connector, Engine Wiring - Replace

0.5 hr