unleaded
SHould be somewhere on or near the valve covers.
10w 40
get a clymer manual for torque specifications.
the pcv is on the drivers side valve cover towards the back of the valve cover.
it is located on the driver side valve cover in the back may be easier to get to from the inside
Insufficient EGR (exhaust gas recirculation) valve. Suggest you replace the valve.
I anwered this question Look at post ... "Where is Expansion valve located on 2003 Yukon Denali XL"
I own a 2002 XL-7 and the low pressure side is located behind the front grill, next to the right headlight.
The EGR valve is located on the front part of the engine on a 2002 GMC Yukon XL SLT. It is in front of the area where you add oil to the car.
i have a xl185 manual and it says that the motor produces 18hp stock. that equates to a top speed of approximately 70mph.
it has 6 cylinder, 24 valve, DOHC