Temperature Mirror Question...

uniteam · June 26, 2008

Hello, I recently bought a GMC Sierra 2002 Crew Cab 6.0L 4x4

I noticed that it has OnStar System on the mirror, Compass and Temperature too...

The compass works fine, but the temperature is always on 0* ... What I need to check ?

BTW, How works the OnStar System, because I press the buttons but nothing happens... (The truck has an aftermarket Radio)

Thanks...

BigJayDogg3 · June 26, 2008

You need an adapter kit for OnStar to work with an aftermarket HU.

MS3DALE · June 26, 2008

On the On-Star,Its not going to work,Your truck has analog system hardware,starting this year all the On-Star systems require digital system hardware.

There are upgrade kits available but only for '03-up vehicles.

Heres a bulletin on this......

Service Information 2002 GMC Truck GMC K Sierra - 4WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 1878242

--------------------------------------------------------------------------------

#06-08-46-007: Information on OnStar Analog-Only Systems - (Dec 13, 2006)

Subject: Information on OnStar® Analog-Only Systems

Models: 1996-2001 GM Passenger Cars and Trucks

Plus:

2002 Buick LeSabre, Rendezvous

2002-2003 Buick Century, Regal

2002-2005 Buick Park Avenue

2002 Cadillac Eldorado, Escalade Models

2002 Chevrolet Avalanche, Silverado, Suburban, Tahoe, Venture

2002 GMC Denali, Denali XL, Jimmy, Sierra, Yukon, Yukon XL

2002 Oldsmobile Intrigue, Silhouette

2002-2003 Oldsmobile Aurora

2002 Pontiac Aztek, Bonneville, Montana

2002-2003 Pontiac Grand Prix

with OnStar® (RPO UE1)

All vehicles equipped with OnStar® listed in this bulletin were built with Analog-Only OnStar® Hardware. OnStar® equipped vehicles with analog-only equipment were designed to operate only on the analog wireless network and cannot be upgraded for digital network compatibility.

Vehicles with this equipment will no longer be able to receive OnStar® services beginning January 1, 2008. At that time, service will be available only through Dual-Mode (Analog / Digital) equipment. Analog-Only vehicles cannot be upgraded to digital equipment.

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

uniteam · June 26, 2008

nor way... hehehe thank you very much for the answer about the OnStar ...

What about the Mirror Temperature ?

Neutron · June 26, 2008

nor way... hehehe thank you very much for the answer about the OnStar ...

What about the Mirror Temperature ?

Sounds like your outside temp sensor is bad. You can replace it easily. It sits just behind the grille.

MS3DALE · June 26, 2008

My guess from what I've seen here at the dealership,Its probably the temperature sensor thats bad.

smattei14 · June 26, 2008

My guess from what I've seen here at the dealership,Its probably the temperature sensor thats bad.

How much are they...I think mine is bad too.

2006 Yukon Denali....

how easy are they to replace yourself?

MS3DALE · June 26, 2008

I'm at home now but if I remember there around $15 bucks.

There easy to change out.

uniteam · July 9, 2008

I went to the dealer, and the catalog (computer) shows 2 Temperature Sensors, one below the right corner light, and one more on the radiador support just next to the oil cooler....

How to know which to change ??

thanks

jrrod2004 · July 9, 2008

For the 2002 Ambient Air Sensor:

Service Information

2002 GMC Truck GMC C Sierra - 2WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 706142 Ambient Air Temperature Sensor Replacement

Removal Procedure

Remove the radiator grille from the vehicle. Refer to Grille Replacement .
Remove the push pin retainer from the sensor mounted on the radiator support brace.
Disconnect the electrical connector from the sensor.

Installation Procedure

Connect the electrical connector to the sensor.
Install the sensor to the radiator support brace and install the push pin retainer.
Install the radiator grille to the vehicle. Refer to Grille Replacement .

uniteam · July 9, 2008

For the 2002 Ambient Air Sensor:

thank you very much M. Cueva for the answer... this procedure is very helpful... I went to the dealer looking for this ambient Air Sensor, but the front desk guy Found another one... In the same picture that you show, but in the left corner is another Temperature Ambient Sensor (for the catalog reference has the number 7 while the gray one that you show on the picture has the number 1)

I found this picture on the web to show you the other sensor...This is another Chevrolet vehicle, but the sensor is identical... Yesterday I returned to my home to check my truck and I found the other sensor... Look it:

I understand according with your answer that I need to change the grille ambient air sensor... But I want to know then what is the function of the other ambient Air sensor...

thanks