Tsms Tsb

[LAGA]

Subject: Rubber Valve Stem Pressure Release Learn Method - keywords check chirp horn low monitor program relearn tire tpm #PIT4220 - (12/28/2006)

 

 

 

Models: 2007 Cadillac Escalade, ESV, EXT

 

2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe

 

2007 GMC Sierra, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL

 

 

 

 

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The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

 

Condition/Concern:

Some customers may comment that they are unable to get the TPM system to learn the new style rubber valve stems using the pressure release method. This may be inconsistent from one tire sensor to the next and one vehicle to the next. If the J-46079 tool is used the learn procedure can be done.

 

The release of air through the valve stem sets up a resonant vibration frequency that can trick the TPM Sensor into thinking it is in motion. This causes the sensor to transmit multiple pressure update messages, not Sensor ID learn messages. The Remote Control Door Lock Receiver (RCDLR) does not recognize the pressure update messages when it is in a Learn Mode. This will not allow the vehicle to acknowledge the sensor with a horn chirp, and the learn procedure cannot be completed.

 

Recommendation/Instructions:

For rubber valve stem sensors only, if you have any problems performing a learn procedure using the pressure release method, use the J-46079 tool to perform TPM Learn procedures.

 

For customers who are unable to perform the learn procedure at home, perform the learn procedure using the J-46079 tool and advise that engineering is working on a fix and parts to correct this condition will be available in the future.

 

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

 

 

 

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 CERTIFICAtTION

 

I was asking questions over at BITOG, about the problems with the relearn procedure and the TPMS and a GM tech posted this TSB. I hope they find the fix before my next tire rotation. Oops, title should be TPMS TSB

[MS3DALE]

That TSB is almost a year old,I'm pretty sure they got it solved by now,I know the tire pressure sensors have a different part number than they did earlier this year.

[LAGA]

I just took my truck in last week. No matter what I did I could not go through the relearn procedure. They had to hook it up to their computer and use the wand to relearn the tire positions. I asked if there was a fix so I would not have to return every time I rotated tires and they told me there was not.

[bcar]

I just took my truck in last week. No matter what I did I could not go through the relearn procedure. They had to hook it up to their computer and use the wand to relearn the tire positions. I asked if there was a fix so I would not have to return every time I rotated tires and they told me there was not.

 

I cannot make mine relearn either....kinda sucks a $30K truck and it has a service light all the time....

[cwrivera]

I just took my truck in last week. No matter what I did I could not go through the relearn procedure. They had to hook it up to their computer and use the wand to relearn the tire positions. I asked if there was a fix so I would not have to return every time I rotated tires and they told me there was not.

 

I cannot make mine relearn either....kinda sucks a $30K truck and it has a service light all the time....

 

 

Me Too? I put air in mine last night and the DIC told me I had a tire pressure monitor error. All the tires pressures went blank. Tryed the recalibrate (what a pain in my a@@). Didnt work.