1500 Classic - Serpentine Belt Replacement 🔧

Nice project to tackle. I’ll walk you through this for your 5.7L HEMI step by step.

Quick Questions ❓

Before we start, please tell me:

• ✅ Do you have basic tools (socket set, ratchet, wrenches, screwdrivers)?
• ✅ Are you working with the truck on level ground with the parking brake set?

I’ll assume “yes” and continue. If not, reply and I’ll adjust.

Safety First ⚠️

• ⚠️ Engine off and cool – never work near a running or hot engine.
• ⚠️ Battery negative cable disconnected – use a 10 mm wrench; this prevents accidental cranking.
• ⚠️ Keep fingers and tools clear of pulleys when releasing the belt tensioner.

Parts You Need 📦

• 🧩 Serpentine (accessory drive) belt for 5.7L HEMI with A/C and 4WD
  • OEM-style belt length is typically around ~96–100 inches (varies by option). Use your parts catalog for exact fit by year/engine.

Tools You Need 🛠️

• 🛠️ Serpentine belt tool or long-handled 1/2" drive breaker bar
  • A serpentine belt tool is a thin, long bar with adapters that lets you reach the tensioner in tight spaces.
• 🛠️ Socket set (metric) – especially 13 mm, 15 mm, 16 mm (for any covers or accessories if needed).
• 🛠️ 3/8" and 1/2" drive ratchets.
• 🛠️ Flat-blade screwdriver or trim tool – to pop off any plastic covers.
• 🛠️ Flashlight – to see the belt routing and pulleys clearly.
• 🛠️ Gloves and safety glasses.

Know Your Belt Routing 🧠

• 🧾 Under the hood, there should be a belt routing diagram sticker (usually on the radiator support or underside of the hood).

If the sticker is missing, take a clear photo of the belt routing before removal.

Step 1 – Prepare the Truck 🧱

• 🧰 Park the truck on level ground, set the parking brake, and put the transmission in PARK.
• 🧰 Open the hood and secure it.
• 🧰 Disconnect the negative battery terminal (10 mm) and move the cable aside so it can’t spring back.
• 🧰 Remove any plastic engine cover if equipped (usually pulls up off rubber grommets).

Step 2 – Locate the Tensioner and Pulleys 🔍

• 🔧 On the 5.7L HEMI, the serpentine belt tensioner is on the front of the engine, slightly toward the passenger side.
• 🔧 The tensioner has a square 1/2" drive hole or a bolt head where you insert your tool to rotate it.
• 🔧 Identify these pulleys:
  • Crankshaft pulley (big one at bottom center).
  • Alternator (top area).
  • Power steering pump.
  • A/C compressor (lower front, usually passenger side).
  • Idler pulleys (smooth pulleys that guide the belt).
  • Tensioner pulley (on the spring-loaded arm).

Step 3 – Release Belt Tension 🧯

• 🛠️ Insert your 1/2" breaker bar or belt tool into the square hole on the tensioner, or onto the tensioner bolt head (usually 15–16 mm).
• 🛠️ Rotate the tensioner in the direction that loosens the belt (typically clockwise on this engine when viewed from the front).
• 🛠️ While holding the tensioner, use your other hand to slip the belt off one easy-to-reach pulley (often the alternator or idler).
• 🛠️ Slowly release the tensioner back to its rest position. Do not let it snap back hard.

Step 4 – Remove the Old Belt 🧵

• 🧰 Pull the belt out from around all pulleys and remove it from the engine bay.
• 🧰 Lay the old belt next to the new one:
  • Check that the length and rib count match.
  • A tiny difference in length is normal, but they should be very close.

Step 5 – Inspect Pulleys and Tensioner 👀

• 🔍 Spin each idler pulley and the tensioner pulley by hand:
  • They should spin smoothly with no grinding or wobble.
• 🔍 Check the tensioner arm:
  • Move it with your tool; it should be smooth and spring back firmly.
• 🔍 If any pulley feels rough or loose, or the tensioner is weak or jerky, it’s a good time to replace them.

Step 6 – Route the New Belt 🧩

• 🧰 Use the belt routing diagram or your photo.
• 🧰 Start by wrapping the belt around the crankshaft pulley at the bottom.
• 🧰 Then route it around the other pulleys, leaving the easiest upper pulley (often an idler or alternator) for last.
• 🧰 Make sure:
  • The belt ribs sit fully in the grooves on grooved pulleys.
  • The belt runs on the smooth side of smooth pulleys.

Step 7 – Apply Tension and Seat the Belt 💪

• 🛠️ Reinsert your tool into the tensioner and rotate it again to relieve tension.
• 🛠️ With the tensioner held, slip the belt over the last pulley.
• 🛠️ Slowly release the tensioner so it tightens the belt.
• 🛠️ Double-check:
  • The belt is centered on every pulley.
  • No ribs are hanging off the edge of any pulley.

Step 8 – Final Checks and Start-Up ✅

• 🔋 Reconnect the negative battery terminal and tighten the 10 mm nut snugly (about 5–7 N·m / 44–62 in-lb – just firm, not gorilla tight).
• 🧰 Reinstall any engine covers you removed.
• 🚗 Start the engine and let it idle.
• 👂 Watch and listen:
  • Belt should run smoothly with no wobble.
  • No squealing or chirping noises.
• 🧰 Shut the engine off and recheck belt alignment once more.

Torque Specs (Common Items) 📏

• 🧷 Battery negative terminal clamp: 5–7 N·m (44–62 in-lb).
• 🧷 If you loosened any accessory or idler bolts:
  • Typical accessory pulley bolts: 40–60 N·m (30–44 ft-lb) – check exact spec if you replaced any component.

Tips & Tricks 💡

• 💡 If access is tight from above, you can sometimes reach the lower pulleys from underneath with the truck safely on ramps or jack stands. Always support the truck properly if you go underneath.
• 💡 A small mirror or your phone camera in “selfie” mode helps confirm the belt is seated correctly on the lower pulleys.
• 💡 If the belt squeals on first start, shut off, recheck routing and seating; a single rib off can cause noise.

Want Parts & Tools? 🛒

Below this answer, HowToo will show you the correct serpentine belt, a belt tool, and any related pulleys or tensioners that fit your truck. You can add them to your cart directly from the parts section.

If you’d like, tell me if your belt routing sticker is present or missing, and I can describe the exact routing path for your 5.7L setup in words so you can double-check it.

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! 🚚