Bulletin No.: 16-NA-061
Date: Feb-2016

Subject:

Service Tire Monitor System/ Tire Pressures Display Dashes/ RKE Short Range/ No Fob Detected Message

Attention:

This Bulletin also applies to any of the models that may be Export vehicles.

This Bulletin replaces PIT5446A. Please discard PIT5446A.
Brand:

Model:

Model Year:

VIN:

from

to

Cadillac

ATS, CTS, XTS

2014

2016

Cadillac

Escalade
Models

2015

2016

Chevrolet

Suburban,
Tahoe

2015

2016

GMC

Yukon Models

2015

2016

Condition

from

Engine:
to

Some customers may comment on any of the following issues:

•

One or more tire pressures display dashes

•

Service Tire Monitor System Message

•

Key fob poor range or inoperative (lock, unlock, remote start, etc.)

•

“No Fob Detected” message or Passive entry system inoperative (if equipped)

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Transmission:

Cause

The technician may find any of the following DTCs set in the BCM associated with the vehicle tire pressure
sensors: C0750, C0755, C0760 and/or C0765.
These concerns could be caused by a poor OR disconnected antenna connection for the Remote Control
Door Lock Receiver (RCDLR). The RCDLR antenna system consists of the following four components:

1.

RCDLR

2.

Coax cable

3.

Antenna Amplifier Module

4.

Antenna (located in right rear glass)

Correction
Before any components are replaced for the conditions listed above, please review the following information and reconnect any disconnects and re-evaluate the
vehicle.
There are 3 locations that the RCDLR antenna system can become disconnected:
1.

Antenna Amplifier Module (3) disconnected from antenna at the right rear glass (4)

2.

Coax cable (2) disconnected at the Antenna Amplifier Module (3)

3.

Coax cable (2) disconnected at the RCDLR (1)

The closer the disconnect is to the RCDLR, the greater number of symptoms will be noticed.
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Examples:
1.

Antenna Amplifier Module disconnected from the Antenna at right rear glass (4) - There may be little to no noticeable issues, may receive a complaint
the RKE range is a little shorter than a like vehicle.

2.

Coax cable disconnected at the Antenna Amplifier Module - The RCDLR may have intermittent issues receiving signals from the TPM sensors that are
farthest from the RCDLR (LF, LR, RF tires). The DIC may display Service Tire Monitor System message and dashes for these tire pressures. In most
cases, the signal from the right rear tire sensor, which is the closest to the RCDLR, will not have any issues. The RKE will have a shorter range.

3.

Coax Cable disconnected at the RCDLR - The RCDLR may not receive any TPM sensor signals. The Service Tire Monitor System message and the
tire pressures will show dashes in the DIC. The RKE may work when the fob is inside the vehicle or immediately outside the vehicle. May have Passive
entry/start issues like No Fob Detected message or Passive entry inoperative. If the fob is put into the fob pocket the vehicle will start.

After any repair, perform a Tire Pressure Learn.

Warranty Information
For wiring repairs covered under warranty, please refer to latest version of Bulletin 10-00-89-005 for warranty information on wire/connector repairs.
Version

1

Modified

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may
occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools,
safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that
your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

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