a 1993 Chevrolet C1500 pickup with a clunking noise

Dear Troubleshooters:I own a 1993 Chevrolet C1500 pickup. Approximately one year ago, a 'clunking' noise developed in the front area of the vehicle. It occurs when the front suspension encounters bumps of just about any sort.

I have had the suspension and engine compartment thoroughly checked by a local Goodyear store, a local Firestone store and [a local Chevrolet dealer] in Covington, LA. Items that were replaced included: Pittman arm, idler arm, intermediate steering shaft, transmission to frame mount and two motor mounts. Adjustments to the wheel bearings and steering box also were performed. While these repairs (according to the mechanics) were necessary, they did not solve the noise.

I happened upon an April 2001 issue of Motor Age, and on page 80, I discovered a reference to what appears to be a similar problem with the 1999 Chevrolet 1500. I am hoping you have information in your database of TSBs that can help me solve this annoying problem.Thank you for your time. Chris L. Ladner III Mandeville, LA

Dear Chris:Based on the parts that were replaced in an attempt to correct your problem, I am assuming that this clunking noise can be felt through the steering wheel.

There was a common problem with the 1992 to 1993 light-duty trucks with tilt wheel. This TSB #333210A dated Dec. 1993 concerns replacement of the steering column upper race-bearing seat to correct a popping noise under certain conditions. This problem primarily occurred during turns. However, if the condition were not corrected, premature bearing and race wear would occur resulting in excessive endplay and noise during suspension shift.

Other areas that should be closely examined are the upper and lower control arm bushings, the stabilizer arm bushings and the coil spring seats.

Also, apply a light pressure on the brake pedal when the noise occurs. If the noise changes or disappears, check your front brake calipers and mounting hardware for excessive movement.

TSB # 00-02-35-003 for the 1999 Chevrolet C1500 concerned replacement of the upper intermediate shaft assembly to correct a clunking noise. Your letter indicates that this unit has been replaced on your vehicle.

Dear Troubleshooters:Great story on the Ford Ranger. Please help me with my 1997 Contour: 39,000 mi., the fan is out on 1,2,3. It just works on high. Is there a low speed fuse? Can there be a resister speed control?

I live in Las Vegas; help me fix it and I will take you to lunch when you're in Las Vegas! Thanks, Mike (via e-mail)

Dear Mike: There's a recall on that. There are at least three weak links in that circuit. One is the fan switch (replaced under the recall). Another is the blower resistor and connector (replaced under the recall), and the third weak link is the fuse panel connector that feeds the whole kit and kaboodle.