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2003 2004 GMC Envoy Engine 4.2L VIN S 8th Digit Chevy Trailblazer Olds Bravada

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2003 2004 GMC Envoy Engine 4.2L VIN S 8th Digit Chevy Trailblazer Olds Bravada For Sale

Used Engine Finder is the best location to discover a high-quality used GMC motor for sale. In order to receive the finest bargain on the ideal substitute motor for your needs, we allow you to reach a community of GMC engine importers & junk yards promptly.

You needn’t waste time shopping around once you have Used Engine Finder available. Just let us know what you want and our salvage yards will reply with multiple estimates. Our direct relationship with the merchant helps to ensure that we are able to offer you the perfect prices.


Look for your ideal GMC engine using Used Engine Finder right now!

  • Used Engine Finder may help you save time and cash by discovering the right motor for your GMC.
  • Obtain numerous prices from our dependable traders.
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Best Engine Replacement Procedure
  1. Swap the engine’s oil, fuel and oil filters, and coolant.
  2. Install new engine and external coolers if existing.
  3. Cleanse the cooling system thoroughly, then replace the water pump.
  4. Renew necessary hoses and belts.
  5. Install a new timing belt, spark plugs, and wires.
  6. Replace essential gaskets and seals, focusing on the oil pan, front, and rear main seals.
  7. Clear the vehicle’s computer codes before engine installation.
  8. Ensure the replacement engine matches the original specifications.
  9. Transfer exhaust manifolds, mounts, distributor, and sensors from the old engine.
  10. Disable fuel and ignition before ignition to prime the oil.
  11. Ensure no plugs or tape remain on the engine before installation.
7 Common Mistakes to AVOID!
  1. Not resetting the vehicle’s computer codes before installation.
  2. Skipping the step of adding engine oil before the first startup.
  3. Forgetting to deactivate the fuel and ignition systems, essential for priming the oil.
  4. Ignoring the replacement of the oil cooler or the radiator’s integrated oil cooler.
  5. Overlooking the cleaning of the radiator and checking the operation of the cooling fans.
  6. Not swapping out the flywheel and its securing bolts.
  7. Trying to initiate the engine’s first run without proper priming.
Warranty Info
Review our Warranty, Return & Exchange policies before ordering. Standard Warranty: 30 days parts replacement. Extended Warranty: Optional 90 days. No labor costs covered. Defective parts may be replaced or refunded. Read more.