Level Ride Compressor Inoperative - keywords air alc control elc height inflate line moisture rear suspension water
| Subject: | Level Ride Compressor Inoperative |
| Models: | 2002-2005 Chevrolet Avalanche |
| 2001-2005 Chevrolet Tahoe, Suburban |
| 2001-2005 GMC Yukon, Yukon XL, Denali, Denali XL |
| 2002-2005 Cadillac Escalade, Escalade ESV, Escalade EXT |
| with RPO G69 |
This PI is being updated to provide new compressor part number. Please discard PIT3525A.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Automatic level control inoperative due to water ingestion.
Recommendation/Instructions:
A new automatic level control service compressor part number 15254590 has been released with improvements to protect against water intrusion. The service part improvements include:
| • | The internal vent solenoid has an improved water intrusion resistant coating. |
| • | The plastic air intake box has been redesigned to prevent water entry into the compressor. |
The new compressor is supplied with a hose that has the new air box attached. When you install the replacement compressor, it's important to install the complete compressor assembly, including the hose and air box. The air box/hose and the differential breather hose are attached at the same location to the fuel tank filler neck. The attachment of these components requires a common plastic barbed "Christmas tree" retainer.
If you receive a Warranty Parts Return Request for a compressor replaced under warranty, be sure to include the old air box and air hose with the compressor when you package them for warranty return.
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.
