For 1990-2009 cars

# Whine Noise after Water Pump Replacement - Proper Use of J43651 - keywords camshaft chain engine front repairs

Subject: | Whine Noise after Water Pump Replacement - Proper Use of J43651

Models: | 2002-2005 Chevrolet Cavalier

| 2004-2006 Chevrolet Cobalt

| 2006 Chevrolet HHR

| 2004-2006 Chevrolet Malibu

| 2004-2005 Chevrolet Malibu Classic

| 2002-2004 Oldsmobile Alero

| 2002-2005 Pontiac Grand Am

| 2005-2006 Pontiac Pursuit (Canada Only)

| 2002-2005 Pontiac Sunfire

| 2003-2006 Saturn Ion

| 2000-2004 Saturn L Series

| 2002-2006 Saturn Vue

| with 2.2L Engine (VIN F - RPO L61)

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

### Condition/Concern:

A whine noise from the front of the engine may be experienced if the water pump is replaced without using the water pump sprocket holding tool (J43651). If the J43651 tool is not used during water pump replacement, the balance shaft tensioner will ratchet out, causing the balance shaft chain to be too tight upon reassembly, which can cause a whine noise from the front of the engine.

### Recommendation/Instructions:

Before attempting repairs, ensure that the noise is definitely abnormal by comparing the noise to other known good vehicles. If the noise is abnormal and the noise was not present until the water pump was replaced, determine if the J43651 tool was used to hold the water pump drive sprocket in place while the water pump was replaced. If it was not used, it will be necessary remove the front cover and reset the balance shaft tensioner by using SI repair procedures to eliminate this noise.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.