Category Archives: Buick

Buick auto repair questions and answers from Dealership mechanics. Read through our growing list of problems solved.


Location Of 2000 Buick Century Emission Control Valve

I cant find the  emission control, the picture is too blurry to see it. Can you help? I have a 2000 Buick century 2000. And p0440 and p0442 says i have a leak also. ProTech What emission control component are you looking for? There are many on each vehicle.The codes you have are both for…

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2003 Buick Lesabre Misfire and Engine Light

I have a 2003 Buick Lesabre 3.8L, I am getting a code P0300 and P0302 code from Autozone. I have changed out the spark plugs and wires and the 3 coil packs. The car is running a little rough but not dying. It is still getting the same codes? Someone suggested checking the #2 injector, so…

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1995 Buick Regal Rough Idle

I have a 1995 Buick Regal. All of a sudden it seems to load up on fuel rough idle, have put new fuel pump in and didn’t help. has to be primed to get started once it runs its fine unless you shut if off then it has to be primed again before it will…

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1993 Buick Lesabre Stalls Then Starts Right Up

I have a 1993 Buick Lesabre 3800 engine. It starts and runs great. But after driving 25 to 30 miles it will die, I put it in neutral and it starts right back up and goes an while longer before it dies again. sometimes it will die several times in a row in a mile…

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2003 Buick Lesabre Heated Seat Problem

I have a 2003 Buick Le Sabre LE and have a unserviceable heated seat on the driver’s side. The dealer has analyzed it no results said they needed to remove the seat for further checks. Where do you think the likely problem is and where I might look myself? ProTech: You probably have a bad…

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2009 Buick Enclave Warranty Repair I Was Charged For

Is the coil pack (No. 3) covered under the 100,000 mile power & drive train warranty? ProTech: What year and model vehicle do you have? 2009 Buick Enclave. Yes the ignition coil would be covered under the powertrain warranty at your dealership. So why was I charged $160.00 labor cost and told that it was not…

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How To Install Buick Century Power Steering Pump

I have a 2004 Buick Century and I need to see a picture of how the power steering sits. My nephew tore apart the engine. I know how to replace it but the issue is that I don’t know what bolts go where or if the unit is set right. Mechanic JK: What engine size in your Buick?…

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1998 Buick Regal Blowing Smoke And Knocking

I have a 1998 Buick Regal and it has a knock coming from the engine and dies when driving. Also it starts up very rough and won’t go past 4000 RPM’s. Possible timing issue? It blows out black smoke too. Mechanic JK: OK. An engine knock is not usually a timing issue. And black smoke is…

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2004 Buick Century Heater and Wipers Stopped Working

I have a 2004 Buick Century and all of a sudden the power windows, heater and wiper blade arms stopped working. There is also no power to the radio or windows when the vehicle is in the accessories. I tried to check the fuses and can’t seem to find anything that is wrong. You have…

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1995 Buick Lesabre Is Loosing Engine Power

I have a 1995 Buick Lesabre and its cutting all power sometimes when turning and at a little incline. Protech: Cutting power how? Electrical power? Or engine power? Engine power it just dies the only engine light on is the abs light. And this only happens when turning the wheels on a slight incline? No…

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3.8L Buick Burns Oil Between Changes

I have a 2004 Buick 3.8 motor I’m burning a quart and half of oil between changes. I’m not leaking any oil on ground thanks kraig. ProTech: You might want to check the PCV system. If the valve is bad, or one of the o-rings is cut, improperly installed, or missing, the engine will start…

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What Lube Goes In My Buick Roadmaster Rear End?

What kind of lubricant does the 94 Buick Roadmaster Estate Wagon use in the non-slip differential? ProTech: It uses regular 80-90w gear oil in the rearend, but there is an additive for the limited-slip unit which you can get at any GM dealership. I used a 90 weight but the clutches are sticking, I believe.…

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