GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Service and Appearance Care 🢒 Checking Things Under the Hood 🢒 Engine Compartment Overview

When you open the hood on the 6.6L DURAMAX Diesel Engine you'll see:


Object Number: 1276751 Size: C2

  1. Engine Air Cleaner/Filter

  2. Coolant Surge Tank

  3. Battery

  4. Engine Air Cleaner/Filter Restriction Indicator

  5. Engine Oil Dipstick

  6. Automatic Transmission Dipstick

  7. Engine Oil Fill Cap

  8. Engine Fan

  9. Power Steering Fluid Reservoir

  10. Remote Negative (-) Terminal

  11. Remote Positive (+) Terminal

  12. Brake Fluid Reservoir

  13. Clutch Fluid Reservoir (If Equipped)

  14. Underhood Fuse Block

  15. Windshield Washer Fluid Reservoir

RPO LLY Engine
Object Number: 1276751 Size: C2

  1. Engine Air Cleaner/Filter

  2. Coolant Surge Tank

  3. Battery

  4. Engine Air Cleaner/Filter Restriction Indicator

  5. Engine Oil Dipstick

  6. Automatic Transmission Dipstick

  7. Engine Oil Fill Cap

  8. Engine Fan

  9. Power Steering Fluid Reservoir

  10. Remote Negative (-) Terminal

  11. Remote Positive (+) Terminal

  12. Brake Fluid Reservoir

  13. Clutch Fluid Reservoir (If Equipped)

  14. Underhood Fuse Block

  15. Windshield Washer Fluid Reservoir

When you lift up the hood on the VORTEC 4300 V6 engine, you'll see the following:


Object Number: 808984 Size: C1

  1. Engine Air Cleaner/Filter. See Engine Air Cleaner/Filter .

  2. Coolant Surge Tank. See Engine Coolant .

  3. Air Filter Restriction Indicator (If Equipped). See Engine Air Cleaner/Filter .

  4. Engine Oil Dipstick. See Engine Oil .

  5. Automatic Transmission Dipstick (If equipped). See Automatic Transmission Fluid .

  6. Fan. See Cooling System .

  7. Engine Oil Fill. See Engine Oil .

  8. Power Steering Fluid Reservoir. See Power Steering Fluid .

  9. Remote Negative (-) Terminal (GND). See Jump Starting .

  10. Remote Positive (+) Terminal. See Jump Starting .

  11. Brake Fluid Reservoir. See Brakes .

  12. Clutch Fluid Reservoir (If Equipped). See Hydraulic Clutch .

  13. Underhood Fuse Block. See Fuses and Circuit Breakers .

  14. Battery. See Battery .

  15. Windshield Washer Fluid Reservoir. See Windshield Washer Fluid .

When you lift up the hood on the VORTEC 5300 V8 engine (VORTEC 4800 and 6000 V8 engines similar), you will see the following:


Object Number: 809001 Size: C1

  1. Engine Air Cleaner/Filter. See Engine Air Cleaner/Filter .

  2. Coolant Surge Tank. See Engine Coolant .

  3. Air Filter Restriction Indicator (If Equipped). See Engine Air Cleaner/Filter .

  4. Engine Oil Dipstick. See Engine Oil .

  5. Automatic Transmission Dipstick (If Equipped). See Automatic Transmission Fluid .

  6. Engine Oil Fill. See Engine Oil .

  7. Fan. See Cooling System .

  8. Remote Negative (-) Terminal (GND). See Jump Starting .

  9. Power Steering Fluid Reservoir. See Power Steering Fluid .

  10. Remote Positive (+) Terminal. See Jump Starting .

  11. Brake Fluid Reservoir. See Brakes .

  12. Clutch Fluid Reservoir (If Equipped). See Hydraulic Clutch .

  13. Underhood Fuse Block. See Fuses and Circuit Breakers .

  14. Battery. See Battery .

  15. Windshield Washer Fluid Reservoir. See Windshield Washer Fluid .

When you lift up the hood on the VORTEC 8100 V8 engine you will see the following:


Object Number: 808989 Size: C1

  1. Engine Air Cleaner/Filter. See Engine Air Cleaner/Filter .

  2. Coolant Surge Tank. See Engine Coolant .

  3. Air Filter Restriction Indicator (If Equipped). See Engine Air Cleaner/Filter .

  4. Engine Oil Dipstick. See Engine Oil .

  5. Automatic Transmission Dipstick (If Equipped). See Automatic Transmission Fluid .

  6. Engine Oil Fill. See Engine Oil .

  7. Fan. See Cooling System .

  8. Remote Negative (-) Terminal (GND). See Jump Starting .

  9. Remote Positive (+) Terminal. See Jump Starting .

  10. Power Steering Fluid Reservoir. See Power Steering Fluid .

  11. Brake Fluid Reservoir. See Brakes .

  12. Clutch Fluid Reservoir (If Equipped). See Hydraulic Clutch .

  13. Underhood Fuse Block. See Fuses and Circuit Breakers .

  14. Battery. See Battery .

  15. Windshield Washer Fluid Reservoir. See Windshield Washer Fluid .

When you open the hood on your vehicle, you will see the following:


Object Number: 1203257 Size: C1

  1. Starter Generator Control Module (SGCM) Coolant Surge Tank. See Cooling System .

  2. Starter Generator Control Module (SGCM). See Cooling System .

  3. Engine Oil Dipstick. See "Engine Oil" in the owner manual Index.

  4. Automatic Transmission Dipstick. See Automatic Transmission Fluid and in the owner manual Index.

  5. Brake Fluid Reservoir. See "Brakes" in the owner manual Index.

  6. Hybrid Underhood Fuse Block. See Fuses and Circuit Breakers .

  7. Underhood Fuse Block. See "Underhood Fuse Block" in the owner manual Index.

  8. Engine Air Cleaner/Filter. See Engine Air Cleaner/Filter in the owner manual Index.

  9. Air Filter Restriction Indicator (If Equipped). See Engine Air Cleaner/Filter in the owner manual Index.

  10. Engine Coolant Surge Tank. See "Cooling System" in the owner manual Index.

  11. Engine Oil Fill. See "Engine Oil" in the owner manual Index.

  12. SGCM Engine Cooling Fan. See Cooling System .

  13. Remote Negative (-) Terminal (GND). See Jump Starting .

  14. Electrohydraulic Power Steering Fluid Reservoir. See Power Steering Fluid .

  15. Remote Positive (+) Terminal. See Jump Starting .

  16. 12-Volt Battery. See Battery .

  17. Windshield Washer Fluid Reservoir. See "Windshield Washer Fluid" in the owner manual Index.