Question about 1991 Chevrolet C1500
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Posted on Jan 02, 2017
SOURCE: oil sensor
use 5w30 temps below 30degreed F 10w30 above 30 if u got 50,000 miles or more just stick with 10w30 at any temp
i recommend valvoline , used it for lots of years in all my vehicles never had a lubrication issue or failure
new motors w\ low miles need thinner oil 5w30
older moters w\ higher miles need a thicker oil 10w30
Posted on Dec 17, 2008
Look under the hood on the fire wall behind the engine there is a black cover with 3 tall black what look like nuts. remove them and you will see a relay center, now there should be a brown wire marked timing may be not marked but pretty sure its brown just unplug it and go from there. I sure hopes that gets you going and thanks for using
Posted on Jul 20, 2008
wt. of the oil is usualy depending on temperatures it runs around but might be posted on the oil cap but it is stated that it recommends synthetic.
Posted on Feb 01, 2010
SOURCE: I bought my 2003 chevrolet
It appears you are looking after your pickup well.
A couple words of advise.
Don't over oil the K&N. Excess oils will deposit on the mass airflow sensor on the intake duct and insulate the hotwire inside it.
Also if it hasn't been done already, synthetic gear lubes in the differentials are great value. They last for a long time and a reduction in friction will also help save fuel, especially if you live in a colder climate.
If your truck has an automatic transmission there is a filter that should be changed if it hasn't been done already. The pan will need to be dropped in order to change it.
Also just in case someone tries to sell you a cabin air filter.
Starting in 2003 model year, the passenger compartment air filter is no longer available as a factory option. With the redesigned HVAC case, there is no longer a cavity for the filter. The GM parts catalog indicates there is a replacement filter available; however, there is no provision for it.
And of course the fuel filter. This is mounted on the inside of the frame on the left side.
A restricted or plugged fuel filter can overwork the electric fuel pump that is inside the fuel tank.
That pretty much covers the normal maintainence filters Justin.
I hope you get it to 500,000 miles.
Thank you for using FixYa.
Posted on Jan 20, 2011
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