By Jonathan Floyd
Hey guys I’m new to the forum as well the brand. I recently just bought a 2019 custom trail boss which only offers the 5.3. I wanted the 6.2 but that came with only the higher trims. I’m familiar with the 5.7 hemi and I’m kinda down about the 355 horsepower/ 383 torque compared to my hemi that I traded. What can I do exactly to get more power to the engine?
By Alex Martin
Hey guys, i have a 2005 gmc yukon with electric fans. It is the 5.3 and the electric fans will not turn on. I have replaced the coolant temp sensor and the relays and it is still inop. If i send 12v to the fans they will turn on and constant power is getting too the two 4 prong relays my tools will not fit to test the 5 prong. None of the fueses are blown either and relays have resistance to them. It has a slight hickup on startup but not much of one and sadly no they do not work with the ac on the temp will go straight past 210 when parked
I've got an '09 Yukon Denali that was having cruise control issues from time to time. I replaced the brake light switch which seemed to solve that issue but shortly after I had the service stabilitrak/traction control message display come up as well as a glowing ABS light. The switch was replaced a couple of weeks back. The traction control/stabilitrak message has illuminated maybe 5 or 6 times since and only comes on when I have stopped at a light or a stop sign.
I know this may be a wheel speed sensor issue but the fact it showed up shortly after changing the brake light switch has be scratching my head. Anyone have a stabilitrak cure? Thanks for any input.
Newb here. My 07 Yukon has been in the shop over a week now. (Local mechanic) Have had the vehicle about a year, changed the oil regularly, replaced oil sensor and sending unit due to the infamous low oil pressure warnings. Thing has driven great until randomly one day she started idle hard and misfired when going into first. I changed all sparks, plugs. No change. Shop is saying my oil pump is completely shot..? I've had no noise no other signs of it starting to fail. My sensor would routinely go off a month prior to oil change being due. Do these things really just crap out? Could it be related to my misfire? They are checkin the head on that, otherwise she drove normal and smooth once I go over 15mph. If she survives and my wallet doesn't get drained, I will be disabling the AFM.
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