Toyota recently announced a TSB (Technical Service Bulletin) for the rear suspension squeak noise on 2005-11 Tacomas.
Toyota states that:
Some 2005 – 2011 model year 4×4 or PreRunner Tacoma vehicles may exhibit a squeak noise from the rear leaf spring when traveling over speed bumps or with suspension movement from loading and unloading the suspension. A new leaf spring pad has been made available to reduce the noise.
This TSB only covers specific 2WD, 4WD models of Tacoma’s including:
- Access Cab
- Double Cab
- Regular Cab
- Long Bed
Owners of the model years affected and those who fall within Toyota’s Comprehensive Warranty (36 months or 36,000 miles, whichever occurs first, from the vehicle’s in-service date) are encouraged to contact their local Toyota dealer for repair instructions.
This repairmay be long and complex based on which type of leaf spring you need to replace and it is recommended you visit your local Toyota Service Center for replacement.
The first step is verify the noise is coming from the leaf spring.
- Confirm noise is present by jouncing (bouncing) the rear suspension.
- Take and lift the vehicle by the frame to allow the rear suspension to hang.
- Carefully place a rag between the spring insulator and the leaf spring.
- After jouncing it while hanging, lower the vehicle and jounce the vehicle. If the noise then goes away, you know the source of the noise is the leaf spring pad.
Take note, after you are done isolating all the pads using rags and the noise continues, the noise is then NOT from the leaf spring pad. As such this TSB doesn’t apply.
Next determine whether you have a 3-leaf spring or a 4-leaf spring. Both procedures require you to:
- Use a large pry bar to separate the leafs.
- Take a pick, punch or screwdriver to push upward on the the pad from the underside.
- Separate, remove it and discard.
- Clean all the grease and dirt between the leaf springs while not applying any new grease.
The 4-leaf spring repair procedure requires you to remove an additional leaf spring prior to installing a new spring pad.
After removing all the effected leaves, it is time to install a new spring pad with the reverse of the removal procedure. When finished make sure the vehicle is test driven to verify repair.