It is on the bottom rear passenger side of the engine. You will have to lay under the truck to see it.
It is behind the starter. you can not see or get to it until you remove the starter.
The starter relay on that 99 Silverado is located in the under hood power distribution center.
All the O2 sensors on a 99 Chevy Silverado with a 5.3 engine are located in the exhaust. The are positioned on each side of the exhaust manifolds and just after the crossover.
NO.
yes
It is located behind the wheel well on pasenger side. Next to the transmission case.
where is knock sensor located on a 99 Silverado 1500 4.3
Yes they will as long as the 99 is not the new body style.
I have 1999 chevy Silverado z71 wanting to see if a 1994-95 chevy Silverado z71 bed will fit
on a 99 model there are two of them and its located under the intake. quite a bit of work but not bad.
The Starter is accessible from beneath the vehicle
around 27 gallons max