GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • CH-904 Base Frame
    • EN 49290 Mounting Engine/Gearbox
    • EN 49290-1 Ground Plate
    • EN 49290-4 Right Pin Bracket
    • EN 49290-5 Left Pin Bracket
    • EN 49290-6 Pin
    • EN 49290-7 Adapter Plate
    • EN 49290-8 Front Mounting Bracket Right
    • EN 49290-9 Front Mounting Bracket Left
    • EN 49290-10 Rear Mounting Bracket Right
    • EN 49290-11 Rear Mounting Bracket Left
    • EN 49290-12 Adapter Plate
    • EN 49290-14 Supporting Stand
    • EN 49290-15 Adapter Plate
    • EN 49290-16 Supporting Stand
    • EN 49290-18 Supporting Stand

For equivalent regional tools, refer to Special Tools.

Prepare the CH-49290 for Mounting Engine


    Object Number: 2028335  Size: SH
  1. Instal the tool components at the CH-49290-1 plate  (2).
  2. • CH-49290-16 supporting with
      CH-49290-15 plate  (3) at position 21 and V.
    • CH-49290-5 bracket  (6) at position 02.
    • CH-49290-6 pin  (5) at position E on the
       CH-49290-5 bracket  (6).
    • CH-49290-14 supporting with
      CH-49290-12 plate  (7) at position 13 and Q.
    • 2 bolts with 2  CH49290-18 supporting  (10) at position 34 an position 40.
    • CH-49290-4 bracket  (13) at position 01.
    • CH-49290-6 pin  (14) at position C on the CH-49290-4 bracket  (13).
  3. Turn the CH49290-18 supporting  (10), CH-49290-14 supporting  (7) and CH-49290-16 supporting  (3) downward.

Note: Do not Install the EN 49290-10 bracket  (1), EN 49290-11 bracket  (4), EN 49290-7 plate  (8), EN 49290-9 bracket  (9), EN 49290-7 plate  (12) and EN 49290-8 bracket  (11) until the tool contact the frame.

Install Procedure

  1. Raise the vehicle by its full height. Refer to Lifting and Jacking the Vehicle
  2. Remove the front compartment insulator. Refer to Front Compartment Insulator Replacement.
  3. Install the EN 49290 mounting at the CH-904 frame .

  4. Object Number: 2028336  Size: SH
  5. Raise the EN 49290 mounting  (1) with a jack.
  6. Note: Ensure that the 2  CH-49290-6 pin are fixed in both holes of the sub frame.

  7. Install the EN 49290-9 bracket and EN 49290-8 bracket  (2) with the 2 EN 49290-7 plate  (4).
  8. Install the 4 bolts (3).
  9. Install the EN 49290-10 bracket and EN 49290-11 bracket  (5).
  10. Install the 4 bolts (6).
  11. Lower the jack and remove it.

  12. Object Number: 2028337  Size: SH
  13. Turn the CH-49290-14 supporting  (4) upwards until it seat solidly at the front engine mount bracket (3).
  14. Turn the CH-49290-16 supporting  (5) upwards until it seat solidly at the rear engine mount bracket (2).
  15. Turn the 2 CH49290-18 supporting  (6) upwards until it seat solidly at the oil pan (1).
  16. Remove the CH-904 frame from the EN 49290 mounting .

Removal Procedure

  1. Install the CH-904 frame to the EN 49290 mounting .

  2. Object Number: 2028336  Size: SH
  3. Support the EN 49290 mounting  (1) with a jack.
  4. Remove the 4 bolts (3).
  5. Remove the EN 49290-9 bracket and EN 49290-8 bracket  (2) with the 2 EN 49290-7 plate  (4).
  6. Remove the 4 bolts (6).
  7. Remove the EN 49290-10 bracket and EN 49290-11 bracket  (5).
  8. Lower the EN 49290 mounting with a jack.