Generally, it's considered a moderate difficulty job. It's not something a complete novice should attempt without some guidance, but it's not excessively complex either. Here's a breakdown of what makes it moderately difficult:
* Accessibility: The engine bay in an S-10 can be somewhat cramped, making it challenging to reach certain hoses.
* Coolant Draining: You'll need to drain some or all of the coolant before disconnecting the hoses, to avoid making a mess.
* Clamps: Hose clamps can sometimes be stubborn to remove, especially if they're rusted or corroded.
* Potential for Leaks: If you're not careful, you could nick the new hose during installation or fail to properly secure the clamps, leading to leaks.
Where to find an engine diagram:
1. Repair Manual: A Haynes or Chilton repair manual specific to your 1992 Chevy S-10 Blazer is your best bet. These manuals contain detailed diagrams, exploded views of components, and step-by-step instructions. You can find them at most auto parts stores or online retailers like Amazon.
2. Online Resources: Websites like AutoZone, Advance Auto Parts, and others often have diagrams and parts lookups. Enter your vehicle's year, make, and model to find relevant information, though the diagrams may not be as comprehensive as a repair manual.
3. Online Forums: Searching specific S-10 forums (e.g., on sites dedicated to GM trucks) might yield helpful diagrams or advice from experienced owners who've tackled this repair. Be sure to specify the engine size (4.3L V6 is common, but others existed) as this will influence hose routing.
Before you start:
* Gather your tools: You'll need pliers or a clamp tool, screwdrivers (potentially), a drain pan, new heater hoses (get the correct size!), and coolant.
* Consult a diagram: Identify the specific hose you need to replace *before* you begin working.
* Take pictures: Before disconnecting anything, take photos to help you remember how everything goes back together.
If you're uncomfortable with this type of repair, it's always best to take your vehicle to a qualified mechanic. The cost of professional labor might be worth avoiding a potentially messy or damaging DIY attempt.
