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Subject:Intermittent No Start or No Crank - keywords circle deterrent Mobile passkey PK3 PK3+ plus security Speedpass theft vehicle VTD #PIC3919 - (02/13/2006)
Models:2005-2006 Buick LaCrosse and Allure (Canada Only)
2006 Chevrolet Impala and Monte Carlo
2000-2006 Pontiac Grand Prix
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Vehicles equipped with passkey III (PK3) may exhibit a no start or no crank condition if the owner has a Mobil Speedpass, a key with a transponder from another vehicle, or similar radio frequency sensing device on the key ring. The concern may be intermittent. If the Speedpass or the other key is too close to the PK3 module it could interfere with or disrupt the signal and cause a theft tamper mode to be enabled.
The Mobil Speedpass, a key with a transponder from another vehicle, or similar radio frequency sensing device either has to be removed from the key ring or a second key ring can be added to the first so that the other radio frequency sensing device is distanced from the ignition lock cylinder.
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.