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Makes 🢒 Cadillac 🢒 2007 🢒 Escalade 🢒 Bulletins 🢒 EI07140 - Service Suspension Message (ECU) DTC C0550 C0895 (Engineering Investigation)

EI07140 - Service Suspension Message (ECU) DTC C0550 C0895 (Engineering Investigation)

Subject:EI07140 -- Service Suspension Message (ECU) DTC C0550 C0895 (Engineering Information)

Models:2007 Cadillac Escalade, Escalade ESV, Escalade EXT
2007 Chevrolet Avalanche, Suburban, Tahoe
2007 GMC Yukon, Yukon Denali, Yukon XL, Yukon Denali XL
with RPO G69 -- Automatic Level Control Suspension

Attention: Proceed with this bulletin ONLY if the customer has commented about this concern AND the EI number is listed in GMVIS. If the customer has not commented about this condition or the EI does not show in GMVIS, disregard the bulletin and proceed with diagnostics found in published service information. THIS IS NOT A RECALL -- refer to Service Bulletin 04-00-89-053A for more detail on the use of Engineering Information bulletins.

Condition

Important:  If the customer did not bring their vehicle in for this issue, DO NOT proceed with this bulletin.

Some customers may comment on a service suspension message. The technician may also find DTCs C0550 and/or C0895 stored in history.

Cause

GM Engineering is attempting to determine the root cause of this condition. Analysis of ESC (Electronic Suspension Control) modules returned through the warranty parts center has resulted in No Trouble Found. It is important to note that DTC C0550 may set when a low battery condition has occurred (less than 9.5 volts). It may also be possible for DTC C0550 to reset after clearing codes with the scan tool, until the ignition is cycled OFF then ON.

Correction

DO NOT REPLACE THE ESC MODULE.

Use the following information to diagnose the customer's concern. When possible, note as much of the following information as possible on the repair order.

  1. What is the specific customer's concern?
  2. Has the vehicle recently had a dead battery and/or been jump started?
  3. Are there any aftermarket electrical components added to the vehicle? If so, explain what and where they are tied into the electrical system.
  4. Resolve any condition that may have resulted in a low battery.
  5. Note and clear all codes.
  6. Cycle the ignition OFF then ON.
  7. Check for codes. Document all DTCs on the repair order. If any DTCs other than C0550 or C0895 are set, diagnose and correct those concerns before proceeding with step 8.
  8. Clear and check for codes again. Is C0550 (Service Suspension message) still present?
  9. Contact either of the engineers listed below:

Engineer:

Phone #:

Steven Sammut

248-640-8228

Todd Brinkman

810-459-8826

If the engineer is not available, leave the following information:

    • Dealer Name, dealer code and phone #
    • Technician's name
    • VIN

If the call is not returned within one hour, proceed with diagnosing and repairing the vehicle according to information found in SI. For vehicles located within a 2 hour commute from the Detroit, MI and Dayton, OH areas, engineering may request to visit the dealership to inspect the vehicles.

Warranty Information

Labor Operation

Description

Labor Time

N9570*

Engineering Information -- Electronic Rear Suspension

1.5 hrs

*This labor operation is for bulletin use only. The number will not be published in the Labor Time Guide.