Buick Regal owners have reported 1 problem related to owners/service manual (under the equipment category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Buick Regal based on all problems reported for the Regal.
I have a Buick power add on system that is 50 state carb legal called the stage one kit offered by gm the kit consists of an air intake and a software calibration. Among all the issues I have been having with the car their final solution was to install the oem calibration and fuel tables but leave the the stage one kit installed. I believe this makes my car non-50 state emissions compliant. Part number for stage kit is 12653664. The isntallation manual specifically mentions not driving without the calibration update from the dealer. I have no way of putting it back in.
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