Could any of you please comment on a problem I have? I own a 2000 GMC
Sierra 1/2 ton pickup, 2WD with milage of 68000 kms (42000 miles).
Awhile ago I noticed that the left-rear side of the truck appeared to be
lower that the right. I took measurements and found that the left was 1 1/2
inches lower than the right. I took these measurements from the bottom of
the wheel rim to the fender wheelwell. (Measuring from the ground may not
be accurate due to uneven tire inflation or uneven ground).
I brought this to the attention of my GM dealer who checked it out and
reported that the rear of the vehicle was level. I took measurements again
while at the dealer and discovered that the difference was only 1/4 inch.
So something had changed while driving from my home to the dealer's site. I
drove home and checked again. This time the difference was about 1 inch.
What's going on here?
I have a theory. There is almost no weight in the bed of the truck so the
back end of the truck is light. What if there is dirt or other foreign
matter between the spring leaves? As I drive over uneven road surfaces the
springs flex. Due to dirt between the spring leaves and because there's not
much weight back there, the springs don't always return to their original
position. What do you think? Have you heard of this problem before?
Perhaps I'm worrying about nothing but my concern initially was that there
was a weakened spring. I've never carried any heavy load in the bed.
I thought I might attempt to spray liberal amounts of WD40 between the
spring leaves in case my theory is correct. Any thoughts or similar
Thanks to all.