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TechLink: Cadillac XTS loss of rear trim height


Bruce Nunnally

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Loss of Rear Trim Height

On the 2013 XTS, it may be noticed that the vehicle is sitting lower after being parked for several days or more. Normal diagnostics for Air Suspension Air Leaks or Low/Uneven Trim Height may be completed with no trouble found
Under normal conditions, it is typical for the air suspension system to drop up to 0.5mm of trim height per 24-hour period
.
Changes in temperature also can affect trim height: The trim height can be expected to drop as much as 2.6mm for every 10°F (5.6°C) drop in ambient temperature
.

It should be considered normal operation if a vehicle loses trim height when parked and unused for several days, but achieves and maintains normal trim height when cycling the ignition and using the vehicle regularly
.
No repairs should be attempted
.

Remind customers that cycling the ignition or starting the vehicle will bring the trim height back to a normal level

Bruce

2016 Cadillac ATS-V gray/black

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on a related note:

Change at Assembly Plant
A change was made at the assembly plant on the 2013 XTS to eliminate a rear air suspension leak
.
TAC Action Center cases identified where the rear suspension air lines were not fully in- serted or seated into the air spring fitting, which provided a leak path
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A repair was recommended for vehicles at dealerships (sliding the ferrule retainer further back on the air line) and this repair was instituted at the assembly plant as well

Bruce

2016 Cadillac ATS-V gray/black

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