1. Verify Correct Reassembly:
* Door Panel Removal: You'll likely need to remove the interior door panel again to access the linkage. There are plenty of online tutorials specific to 1999 Chevy Tahoes showing how to do this safely without breaking clips. Search "1999 Chevy Tahoe door panel removal" on YouTube.
* Inspect the Linkage: Carefully examine the entire linkage mechanism. Look for:
* Bent or Broken Parts: Check for any bent rods, broken plastic clips, or damaged connecting points. Replacement parts may be needed if damage is found.
* Dislodged Components: Ensure all the components are properly seated and connected. Pay close attention to where the interior and exterior handle mechanisms connect. There are usually small plastic clips or pivots involved.
* Loose Bolts or Screws: While less common, double check all screws securing the linkage components. Tighten them if needed.
2. Potential Adjustment Points (Limited):
While there isn't a direct "tightening" mechanism like a screw, some minor adjustments *might* be possible depending on how the linkage is designed:
* Alignment of Connecting Rods: Sometimes, the rods might be slightly misaligned, causing play. Try carefully adjusting their position to ensure proper engagement with their mating parts. This often involves gentle manipulation, not forceful tightening.
* Plastic Bushings/Wear: Over time, the plastic bushings that support the linkage can wear out. This can contribute to looseness. Replacing them is usually the solution if this is the case (check auto parts stores for replacement parts, specifying your year and model).
3. If the Problem Persists:
* Replacement Parts: If careful inspection and minor adjustments don't solve the problem, you likely need to replace parts of the linkage mechanism. The specific parts will depend on what's broken or worn.
* Professional Help: If you're not comfortable working on car door mechanisms, take it to a mechanic. They'll have the experience to diagnose and fix the problem efficiently.
Important Notes:
* Take Pictures: Before disassembling anything, take clear pictures of the linkage mechanism so you know how it goes back together.
* Patience is Key: Working on car door mechanisms can be fiddly. Take your time and be careful not to break any plastic clips.
* Part Numbers: If you need to order replacement parts, use your vehicle's VIN number to ensure you get the correct ones.
By carefully examining and reassembling the door handle linkage, you should be able to identify and fix the source of the rattling and looseness. Remember, replacement parts are usually the solution when wear and tear are the culprit.
