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When the air conditioner in your 2003 GMC Sierra Denali starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The A/C system in your Sierra Denali consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling. How to add freon to your 2003 GMC Sierra Denali: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure. In addition to cooling, freon lubricates the compressor when it runs.
Don't send mixed signals - if your turn signal doesn't blink, or blinks rapidly, you likely have a burnt out bulb2003 GMC Sierra Denali 6.0L V8
Minor transmission fluid leaks can often be fixed with the right sealant - see how to do this2003 GMC Sierra Denali 6.0L V8
Want an easy way to save $500? Rotate your tires at least three times per year2003 GMC Sierra Denali 6.0L V8
Animals love the sweet smell of antifreeze, too bad it's toxic! Fix your minor leaks2003 GMC Sierra Denali 6.0L V8
Did you know that heat is worse for your battery than cold? Replace it every 4 years2003 GMC Sierra Denali 6.0L V8
There's no reason to check the washer fluid level without adding some - see how to do it here!2003 GMC Sierra Denali 6.0L V8