Doozy

Bump

Hello all I recently did the head gaskets on my 07 Sierra 1500 sle new nbs and it runs and drives great idles fine but the service traction control and the stabilitrak messages pop up and I have no power to the horn or the buttons on the wheel, totally possible I didn’t plug something back in or missed a ground ( I have the cluster ground, battery, and ignition coil grounds all hooked up), now I did start the truck with the headers straight piped to see if it would start and I was chasing a vacuum leak (ended up being the intake manifold gasket) and I might have fried an 02 sensor or both if that’s what running only the headers does, any help appreciated

Hey guys so I have a 2007 Sierra 1500 sle and this coolant thing is stumping me. When I top off the coolant when it’s cold and take it for a 50 mile ride the reservoir is nearly empty and the whole passenger side of the truck is covered in coolant, I did a pressure test and it drops slowly in an hour from above 15 psi to barely below it. New upper and lower hoses was told the radiator was new from the guy I got it from and head gaskets have less then 20k miles on them. This is really annoying and causes my temp to fluctuate and go from 210 to 250-230 and back down periodically and sprays coolant over the side of my truck, the upper and lower hoses are new and the reservoir is brand new, any ideas?

Hello I have an 07 Sierra 1500 sle, it was misfiring after a huge rain storm and I replaced the spark plugs and the wires and it fixed it for the time being. Then it snowed and iced over, I was pulling into a parking lot when it started shaking at idle and its misfiring again, any ideas

Hello all, I have a 2007 gmc sierra 1500 sle and the heat only works on the driver side vents. The passenger just blows cold and doesn’t seem to react to my changing anything. I tore the dash apart on the passenger side a replaced that actuator and the one under the drivers side along with the other passenger side one. They have all been replaced and not changed the issue. Any help would be appreciated.