Towing A Trailer; Indicator Light - Chevrolet 2007 TrailBlazer Owner's Manua

If the suspension remains at a low height, the rear
axle load has exceeded GAWR (Gross Axle
Weight Rating). When the overload protection
mode is activated, the compressor operates
for about 30 seconds to one minute without raising
the vehicle depending on the amount of overload.
This will continue each time the ignition is
turned on until the rear axle load is reduced
below GAWR.

Indicator Light

The indicator light on the inflator switch in the rear
passenger compartment also serves as an
indicator for internal system error. If the indicator
light is flashing without the load leveling function
or the inflator being active, turn off the ignition. The
next day turn on the ignition and check the
indicator light. The vehicle can be driven with the
light flashing, but if it is you should have the
vehicle serviced as soon as possible.
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Towing a Trailer

CAUTION:
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If you do not use the correct equipment
and drive properly, you can lose control
when you pull a trailer. For example, if the
trailer is too heavy, the brakes may not
work well — or even at all. You and your
passengers could be seriously injured. You
may also damage your vehicle; the
resulting repairs would not be covered by
your warranty. Pull a trailer only if you have
followed all the steps in this section. Ask
your dealer for advice and information
about towing a trailer with your vehicle.