Incorrect PCM Part Number Setting DTC P0135 - crank driveability DTC HO2S MIL misfire noPCM performance program stall start sensor

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

If the PCM was replaced on 2004 Buick Le Sabre with 3.8L L36 engine and now an DTC P0135 is set. The dealer may have installed the incorrect PCM part number.

The 2004 Buick LeSabre was built with PCM part number 12582720 and was supersede to PCM part number 12583826. The PCM part number 12583826 will set DTC P0135 if installed. Order PCM part number 12583827 from GMSPO to correct the concern.

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Please follow this diagnosis 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. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

(04 Buick LeSabre)

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