2003 Chevrolet Silverado 2500 First generation first facelift Fluid and Lubricant Specifications
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Condition | Value |
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Automatic transfer case (NP8 Only) | AUTO-TRAK® II Fluid GM P/N 12378508 (Canadian P/N 10953626) |
Diesel engine oil | Engine oil with the letters CH-4 or CG-4 is best for this vehicle. The CH-4 or CG-4 designation may appear either alone, or in combination with other API designations, such as API CH-4/SJ, CG-4/SH or CH-4/CG-4/SJ. These letters show American Petroleum Institute (API) level of quality. |
Engine coolant | 50/50 mixture of clean drinkable water and use only GM Goodwrench® DEX-COOL® or Havoline® DEX-COOL® coolant |
Hydraulic brake system | Delco Supreme 11® Brake Fluid GM P/N 12377967 (Canadian P/N 992667) or equivalent DOT-3 brake fluid |
Windshield washer solvent | GM Optikleen ® Washer Solvent GM P/N 1051515 (Canadian P/N 993033) or equivalent |
5-speed transmission | Hydraulic Clutch Fluid GM P/N 12345347 (Canadian P/N 10953517) or equivalent DOT-3 brake fluid |
6-speed transmission | Hydraulic Clutch Fluid GM P/N 88958860 (Canadian P/N 88901244) |
Power steering system | GM Power Steering Fluid GM P/N 1052884 -1 pint, 1050017 -1 quart, (Canadian P/N 993294 -1 pint, 993353 -1 quart) or equivalent |
5-speed transmission with low gear (MW3) | GM Goodwrench Synthetic Manual Transmission Fluid GM P/N 12346190 (Canadian P/N 10953477) or equivalent SAE 75W-85 GL-4 gear oil |
5-speed transmission without low gear (MG5) | Synchromesh Transmission Fluid GM P/N 12345349 (Canadian P/N 10953465) or equivalent |
6-speed transmission | TransSynd ™ Synthetic Automatic Transmission Fluid GM P/N 12378515 (Canadian P/N 88900701) |
Automatic transmission | DEXRON®-lll, Automatic Transmission Fluid |
Key lock cylinders | Multi-Purpose Lubricant, Superlube® GM P/N 12346241 (Canadian P/N 10953474) or equivalent |
Floor shift linkage | Lubriplate® Lubricant Aerosol GM P/N 1052349 (Canadian P/N 992723) or equivalent or lubricant meeting requirements of NLGI # 2 Category LB or GC-LB |
Chassis lubrication | Chassis Lubricant GM P/N 12377985 or equivalent or lubricant meeting requirements of NLGI # 2 Category LB or GC-LB |
Front axle | SAE 80W-90 Axle Lubricant GM P/N 1052271 (Canadian P/N 10950849) or equivalent |
Rear axle (with QS4 axle only) | SAE 75W-90 Synthetic Axle Lubricant GM P/N 12378557 (Canadian P/N 88901362) or equivalent |
Manual transfer case (NP1, NP2, and NP3) | DEXRON®-lll Automatic Transmission Fluid |
Front axle drive shaft spline or one-piece drive shaft spline (two-wheel drive with automatic transmission) | Spline Lubricant, Special Lubricant GM P/N 12345879 (Canadian P/N 10953511) or lubricant meeting requirements of GM 9985830 |
Rear drive line center spline | Chassis Lubricant GM P/N 12377985 or equivalent or lubricant meeting requirements of NLGI # 2, Category LB or GC-LB |
Hood hinges | Multi-Purpose lubricant, Superlube ®GM P/N 12346241 (Canadian P/N 10953474) or equivalent |
Door and seat hinges | Multi-Purpose lubricant, Superlube® GM P/N 12346241 (Canadian P/N 10953474) or equivalent |
Outer tailgate handle pivot points, hinges, latch bolt and linkage | Multi-Purpose lubricant, Superlube® GM P/N 12346241 (Canadian P/N 10953474) or equivalent |
Weatherstrip conditioning | Dielectric Silicone Grease GM P/N 12345579 (Canadian P/N 1974984) or equivalent |
Weatherstrip squeaks | Synthetic Grease with Teflon, Superlube® GM P/N 12371287 (Canadian P/N 10953437) or equivalent |
Chevrolet recommendations and specifications for oil and fluid for 2003 Silverado 2500.
Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2003 Chevrolet Silverado 2500 user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.
Before doing any DIY service please check your insurance policy and Chevrolet warranty policy for your region. In some regions DIY service may invalidate your warranty.
Table of Contents
- Air Conditioning Refrigerant Capacity
- Automatic Transmission Fluid Capacity
- Axle Oil Capacity
- Cooling Fluid Capacity
- Engine Oil Capacity
- Fluid and Lubricant Specifications
- Gearbox Oil Capacity
- Manual Transmission Oil Capacity
Conquer your fears and never give up!
DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Chevrolet Silverado 2500 service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.
Doing basic service for your 2003 Chevrolet Silverado 2500 you're not only saving money, but also also improving your technical skills and learning something new.