LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2020 >> Camaro SS, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Manual Transmission - TREMEC 6-Speed (M13 MJK Mm6 MH3)) >> Diagnostic Information and Procedures >> Transmission Clunk on Acceleration or Deceleration >> Test Description

Test Description

WARNING: This page is about a different variant/trim than selected.

The number below refers to the step number on the diagnostic table.

  1. 5 

    This step inspects the driveline components that may be the cause of the clunk noise. The noise may resonate to the transmission.

Step Action Yes No
DEFINITION: A clunk is heard and/or felt on acceleration or deceleration.
1 Did you review the Symptoms - Manual Transmission (MJK, MH3, or MM6) , or Symptoms - Manual Transmission (M13)  and perform the necessary inspections? Go to Step 2  Go to Symptoms - Manual Transmission (MJK, MH3, or MM6) , or Symptoms - Manual Transmission (M13) 
2 Inspect the engine mounts for being loose or damaged. Refer to Engine Mount Inspection .
Did you find and repair the condition?		 Go to Step 7  Go to Step 3 
3 Inspect the transmission mounts for being loose or damaged. Refer to Transmission Mount Inspection .
Did you find and repair the condition?		 Go to Step 7  Go to Step 4 
4 Inspect the transmission to engine fasteners for being loose or missing. Refer to Fastener Specifications (M13) , or Fastener Specifications (MJK, MH3, or MM6) .
Did you find and repair the condition?		 Go to Step 7  Go to Step 5 
5  Inspect the driveline for causing the clunk. Refer to Diagnostic Starting Point - Vehicle .
Did you find and repair the condition?		 Go to Step 7  Go to Step 6 
6
  1. Remove the transmission. Refer to Transmission Replacement (MM6 with LT1 Engine, MH3 or MJK with LT4 Engine) , or Transmission Replacement (M13 with LGX Engine) , or Transmission Replacement (M13 with LTG Engine) .
  2. Disassemble the transmission. Refer to Transmission Disassemble (M13 - LGX with Y4Q) , or Transmission Disassemble (MJK, MH3, or MM6) , or Transmission Disassemble (M13 - LGX without Y4Q, LTG) .
  3. Inspect the following transmission components that maybe causing the clunk:
    • Faulty mainshaft bearings
    • Faulty counter gear shaft bearings
    • Worn speed gear teeth
    • Worn counter gear shaft gear teeth
    • Worn synchronizer sleeve to hub
    • Worn thrust washers and thrust surfaces on the speed gears or mainshaft
Did you find and repair the condition?		 Go to Step 7  Go to Diagnostic Aids
7 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 1 
scientia non olet · About LEMON Manuals