Diesel Place banner

1 - 1 of 1 Posts

·
Registered
Joined
·
11,646 Posts
Discussion Starter #1
<H1>Rear Spring Slap or Clunk Noise - leaf suspension #PI00347A - (09/02/2003)</H1>Rear Spring Slap or Clunk Noise


.


When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms. <A name=ss1-1375115><A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1375115#ss1-1375115" target="_blank">
<H5>Condition/Concern:</A></H5>


Spring slap (clunk) noise from the rear of the GMT800 series truck. Noise can be heard over road irregularities, speed bumps and potholes.<A name=ss2-1375115><A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1375115#ss2-1375115" target="_blank">
<H5>Recommendation/Instructions:</A></H5>


Loosen the rear axle u-bolts, recording the release torque and re-torque the u-bolts to factory specifications.


Roadtest the vehicle.


If noise is still present, install spring insulators on the leading and trailing ends of the overload spring. The part numbers for these insulators are:
<TABLE width="100%" border=1>
<T>
<TR>
<TD vAlign=center align=middle>


15604174</TD>
<TD vAlign=center align=middle>


C1, K1</TD></TR>
<TR>
<TD vAlign=center align=middle>


15604175</TD>
<TD vAlign=center align=middle>


C2, K2 WITHOUT 8600 GVWR</TD></TR>
<TR>
<TD vAlign=center align=middle>


15604176</TD>
<TD vAlign=center align=middle>


C2, K2 WITH 8600 GVWR</TD></TR>
<TR>
<TD vAlign=center align=middle>


15604176</TD>
<TD vAlign=center align=middle>


C3, K3</TD></TR></T></TABLE>


It may be necessary to use a rubber mallet to install the insulators onto the ends of the spring.


A STRIP OF PLASTIC NYLON IS ATTACHED TO ONE SIDE OF THE INSERT. THIS SIDE SHOULD FACE UP TOWARD THE REMAINING SPRING LEAVES.
 
1 - 1 of 1 Posts
Top