? for a person who is a mechanic, please help!

Squirrel #3s

Squirrel #3s

Highside Hustler #25
***For guys who know how to work on trucks......If it has a bad shake in the front end ONLY when your at 40-45 MPH but rides like a dream before and after, any clue what that might be?*** (GMC Sierra 2500) THANKS
 
Check your front tires first since they are easy to inspect .... make sure you dont have any flat spots or seperation of plys. One good way to check that is when going down the road roll down your window and listen for a thumping sound if you hear that its your tires. The second spot check your tie rod ends .... hope this helps you out.
 
I had the same thing going on with a car of mine, except that it was the RR tire and would start between 60 and 65 mph depending on inflation in the tire. It was the tire. Got a couple of new ones on the front, moved the fronts to the back, got rid of the backs...presto. No more shaking.
 
Im looking at this truck the other day, drove it and that kinda freaked me out, I dont know much about them. I really liked the truck so if it "could" be a easy cheap fix, that would be great!
 
In the late 70s Goodyear tires would have a seperation of plys and if the seperations of the plys were in the back tires you could see the back of a car or truck move back and forth at the car/truck came to a stop Had a 78 chevy that had that problem
 
Everybodys right on the money,look @ the tires first. But be aware that its not uncommon to have bad ball joints and/or tie rods on any modern truck with over 60,000 miles. Reason is no grease fittings and off shore,low bid,low quality factory installed front end parts. Also be aware that ball joints on a 4wd anything can set you back $800 to $900 bucks @ the repair shop.Might be worth paying a good shop to check the truck over for you before you buy it.
 
Hay Squirrel go get the front end looked at by a machanic of your choice. Where do you live? In the past 25 years I have turned a wrench I have see some crazy stuff. Is the stearing wheel shaking from side to side at low speeds at all? Dose the body feel like it wants to "roll or sway" when this happens? Bad ball joints can also be it. They need to be checked the right way, what year is the truck? Dose the brake peddel thump on your foot when braking? I know that usuly is a brake thing but a badly warped rotor will toss you out of the truck at high speeds if you try to slow down. Kinda pushing to the tire thing like these guys are saying but keep your mind open to something you might not expect. Heck got to get the thing fixed racing weekend is coming up fast. Good luck. If it's tires let me know I work for a tire shop.
 
I just replaced a pitman arm and idler on a guys truck i work with. Very common problem. If its 4 wheel drive......pitman can be taken off by taking steering box bolts out...rotating the box and getting a puller on it. Done it a thousand times..........real common problem
 
Thanks for all the ideas! It is a 93' GMC Sierra SLE 2500

One more ?, im looking at a set of 2005 GMC rims off same style of truck, would they fit my 1993? Both are 8 lug!
I wasnt sure if they changed over the years or were the same still!

Thanks again!

2WD also!
 
I beleive all 8 lug gm's were the same pattern. But if the tire is a different diameter.......your speedo will be off.
 
The 05 should have like a 17 inch tire. The 93 a 16 inch tire. I dont remember off hand what you had to do to recalibrate the speedo for different tire sizes.......but i can find out if you wish.
 
I'm with racin4, move the fronts to the back, and see if the problem moves or changes. If so, bad tire... Just remember, checking is cheap, replacing stuff without identifying the problem isn't. Good luck, Greg
 
Also I have my 1994 Jeep Grand Cherokee 4-sale, $3000!

Thanks everyone, if I buy this truck sat. after I fix the tire issue, i'll let ya know!
 
The tire size will allow you to calculate the diameter of the tire, if you know what you are looking at.

For instance, a 245/75R16

245 is the width of the tread in millimeters.

75 is the ratio of the sidewall height to the width of the tread, so the sidewall is 75%, or 3/4, of 245.

R indicates it is a steel radial belt tire

16 indicates it is a 16" rim.

There are 25.4mm in an inch.

[((245x0.75)/25.4)x2]+16=30.47" or 30.5"
 
You must log in or register to reply here.




Back
Top