I have a 1993 buick regal custom. The steering wheel is very sensitive and the car feels that it drives to the left when i am holding the wheel straight. How can i get the wheel to feel like it needs a little muscle to turn the wheel.

this might help:
Here is the Technical Service Bulletin that maybe of help, worth looking into but can't guarantee that it would fix your problem Steering - Steering Column Clunking When Turning TECHNICAL Bulletin No.: 01-02-32-001P Date: November 25, 2009 Subject: Clunk Felt/Noise Heard From Steering Column, Steering Gear and/or Front Of Vehicle During Turning Maneuver and/or Steering Wheel Rotation (Replace Intermediate Shaft As Directed) Models: 2001-2004 Buick Regal 2005-2008 Buick Allure (Canada Only), LaCrosse 2000-2008 Chevrolet Impala 2000-2007 Chevrolet Monte Carlo 1998-2002 Oldsmobile Intrigue 2004-2007 Pontiac Grand Prix Supercede: This bulletin is being revised to add the 2008 Buick LaCrosse/Allure. Please discard Corporate Bulletin Number 01-02-32-001O (Section 02 - Steering). Condition Some customers may comment on a clunk type noise coming from the front of the vehicle while driving during a turning maneuver.
1. Locate a large area (parking lot) where the vehicle can be turned in a tight circle. 2. Turn the steering wheel to the right and/or left all the way to the steering lock, then off the steering lock a 1/4 turn. 3. Drive the vehicle approximately 5 km/h (3 mph) in a circle, preferably over rough pavement or seams on the road surface. 4. Drive the vehicle straight ahead at idle speed while applying and releasing the brake pedal. Listen/feel the steering wheel for the clunk/noise condition. 5. If a clunk is felt in the steering wheel, the MOST likely cause is the I-shaft - not the steering gear. Continue with the correction. Correction DO THIS - Replace the intermediate shaft DON'T DO THIS - DO NOT lube the intermediate shaft Replace the existing intermediate shaft

CHECK FOR A BROKEN BELT IN THE TIRE

REMOVE HORN PAD,TAKE OFF NUT.USE STERRING WHEEL PULLER,PULL WHEEL,MAKE SURE TO PUT BACK IN SAME POSITION!REMOVE WIRE PLUG,I TIGH AWIRE TO PLUG TO PULL NEW WIRE PLUG BACK DOWN COLEM WHEN PULL OLD ONE OUT.

I would first of all check the power steering fluid.

The drive axle nut will need to come off and the torx bits to the wheel hub will need to be removed

need to know if 4 wheel disk brake or if rear is durm break

sounds like that little knuckle joint was broken by the shop and they left it!

You would have to replace the multifunction switch on the driver side of the steering column. It is not real expensive and if you are handy it is not a real hard job. The multifunction switch does all the directional wiper and headlight controls. The cruise is wired into the handle, but goes down the column. That handle jsut pulls straight out of the multifunction switch.

you may have to replace the steering column you can get one from a salvage yard and have the switch rekeyed for your key to fit it

there is a recall from the dealer that they will fix this