The amount of labor time required to change a 5.7L engine in a GMC truck will vary depending on the specific make, model, and year of the truck. However, as a general guide, most mechanics estimate that it will take between 8 and 10 hours to complete the job. This includes the time required to remove the old engine, install the new engine, and reconnect all of the necessary hoses and wiring.
If you are not experienced in automotive repair, it is important to hire a qualified mechanic to perform this job. Attempting to change an engine yourself can be dangerous and could result in serious damage to your truck.
Here is a more detailed breakdown of the steps involved in changing a 5.7L engine in a GMC truck:
1. Disconnect the battery.
2. Remove the air intake system.
3. Drain the cooling system.
4. Remove the exhaust manifolds.
5. Disconnect the transmission.
6. Disconnect the fuel lines.
7. Unbolt the engine mounts.
8. Remove the engine from the truck.
9. Install the new engine.
10. Reconnect all of the hoses and wiring.
11. Fill the cooling system.
12. Reconnect the battery.
Test drive the truck to make sure that it is running properly.
