2003 — 2008
5.7L HEMI V8 (345 cu in)
Petrol
Perform a cold start with the hood open and listen closely near the front wheel wells for a distinct metallic ticking sound that disappears or quietens as the engine warms up.
Accelerate moderately from a standstill through all gears up to highway speeds (100 km/h), paying attention to any shuddering, hesitation, or 'hunting' between 3rd and 4th/overdrive gears.
Drive over uneven rural roads or perform tight, low-speed figure-eight turns in a dry carpark, listening for clunks, pops, or excessive steering wheel play.
Confirm that the MDS (Multi-Displacement System), if equipped, transitions between 4 and 8 cylinders smoothly without inducing a deep drone or significant cabin vibration.
Major service interval including the replacement of all 16 spark plugs (two per cylinder) and a thorough inspection of the cooling system components.
Consider a comprehensive transmission fluid and dual-filter exchange (ATF+4 only), and inspect transfer case fluids on 4WD models.
Potential for a full front-end suspension evaluation, as rubber bushings, tie rods, and dampeners often reach the end of their optimal service life here.
Check the condition of the timing chain tensioners, water pump, and oil pump, which are parts that invite preventative replacement in high-mileage trucks.
Verify and replace all 16 spark plugs every 50,000 to 80,000 km to maintain optimal combustion and prevent coil pack failures.
Upgrade factory exhaust manifold bolts to high-strength aftermarket studs (like ARP) if manifold leaks or broken bolts are detected.
Service the 545RFE transmission using only licensed ATF+4 fluid and replace both the spin-on cooler filter and flat sump filter.
Regularly lubricate the front steering and suspension grease nipples using high-quality chassis grease at every oil change interval.
Inspect the inner lip of the rear wheel arches, the bottom edge of the tailgate, and the cab corners underneath the vehicle for bubbling paint.
Estimated repair costs if issues arise
Requires partial engine teardown to replace the camshaft and lifter assemblies. Essential to use upgraded parts to prevent recurrence.
Commonly required if the vehicle has towed heavy loads without auxiliary coolers. Must be rebuilt by a specialist familiar with US heavy-duty transmissions.
Replacing worn factory components with heavy-duty aftermarket options (e.g., Moog Problem Solver) to survive NZ's demanding road conditions.
If a cold-start tick is present, future budget planning should account for machining the manifolds and replacing the bolts with high-grade fasteners.
Noticed something inaccurate or missing?Suggest an edit→
Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer