[Manitcor]

Subject: False Tire Inflation Monitor System (TIM) Message/Lamp Illumination (Install New Electronic Brake Traction Control Module - EBTCM)


Models: 1999-2001 Buick Century, Regal
2000-2001 Chevrolet Impala, Monte Carlo


Condition:
Some owners may comment on the "Low Tire Pressure" message appearing or illumination of the "Low Tire" lamp. After checking the vehicle tire pressures, owners have indicated that none of the tires were found to be under inflated 12 psi (83 kPa) or more in comparison to the other three assemblies. This condition typically can be duplicated by operating the vehicle over a rough washboard type road surface.


Correction:
Replace the existing EBCM/EBTCM with a new component selected from the table below. To determine the correct part number to order, locate the ECU PN (1) as shown in figure below, on the existing EBCM/EBTCM label. Then refer to the chart below to determine the correct service part number.


Figure 1


Existing ECU Part Number New Service Part Number
9354019 12214535
9354029 12214534
9354039 12214532
9356769 12214533
9361029 12214533
9370039 12214535
9370049 12214534
9370059 12214533
9370069 12214532
9371984 12214529
9372000 12214532
9376289 12214532
9376439 12214529
9376449 12214531
9378240 12214531
9382019 12214530
9383949 12214520
9383959 12214521
9383969 12214522
9383979 12214523
9384009 12214200
9384019 12214201
9384029 12214202
9384619 12214531
9384629 12214529
9385240 12214535
9385250 12214534
9385260 12214533
9385270 12214532
9392260 12214535
9392270 12214534
9392280 12214533
9392290 12214532
12200359 12214531
12200369 12214530
12200399 12214529
16265291 12214532
16265381 12214535
16265401 12214534


Follow the applicable SI 2000 service procedure indicated below by vehicle year and model.
Model Year Model Document ID Number


1999 Buick Century/Regal 395347
2000 Buick Century/Regal 587265
2000 Chevrolet Impala/Monte Carlo 507094
2001 Buick Century/Regal 697333
2001 Chevrolet Impala/Monte Carlo 809002


Parts Information:
Parts are currently available from GMSPO.


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.


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