Service/Engine Return Procedures

1. Warm up the engine at idle speed until it reaches normal operating temperature (thermostat opens), approx. 13 minutes (more or less depending on ambient and engine temperature).

2. Manually select the lowest forward gear (1) and drive the vehicle with moderate acceleration until the vehicle shifts into 2nd gear (approx. 32 MPH).

CAUTION:
Always operate the vehicle in a safe manner.

3. Manually select 2nd gear and drive the vehicle for 10 minutes not exceeding 40 MPH.

The intention is to drive the vehicle at approx. 3000 engine RPM, realizing traffic conditions may vary greatly.

4. Park the vehicle, with the hood open and the engine running, listen for any ABNORMAL engine sound such as a bearing chirp, knock or squeal.

Verify that any noise heard is not "whoop noise" or accessory drive related. This campaign does not cover those or any other concerns.

"Whoop noise" occurs after an extended hot idle and is generally not audible above 1500 engine RPM.

5. If the engine is judged to emit no abnormal engine sounds, of the type described in step # 4, no further action is required. Go to step # 7.

6. If abnormal engine noise (of the type described in step # 4 is detected), the engine should be exchanged with a new assembly. Refer to the 1996 S/T Service Manual, Book 1 of 2, Page 6A3-29.

Request an exchange engine by calling 1-800-844-1082.

IMPORTANT:
Engines removed must be returned in compliance with standard engine exchange policies.

7. Install the GM Campaign Identification Label.

The removed engine must be returned to the Romulus Engine Plant immediately (not later than 7 days after the receipt of the replacement unit).

FAILURE TO RETURN THE CONCERNED ENGINE WILL RESULT IN THE DEALERSHIP BEING BILLED THE DEALER NET COST OF THE EXCHANGED ENGINE,.

The removed engine must be returned as complete as the replacement engine that was provided in the exchange engine shipping container.

The exchange unit will be shipped with a quantity of oil; check oil level before starting engine.

Included with the exchange unit will be return shipping instructions, including a return shipping label (freight collect at destination) and a partially completed Bill of Lading.