2000 GMC Sierra "tube reversed hot cold" Questions

...reversed the flow of coolant/water through the heater core. My truck is a Sierra 2000 and I refuse to see how a heater core could get clogged up with clear coolant alone. To my surprise a flat piece ...

...hot. takes a long time for temp gauge to read from cold These Tauruses had a problem with the heater cores plugging up, blowing out the head gaskets and no heat issues. Ford issued a TSB#98B26 (Tech ...

...since 1999. Done many of these...If you haven't changed thermostat for 4 years ...Change that as well. You tube has videos. Email me at davefudally@hotmail.com I promise you hot air...from the

...hot and it takes a long time defrost the windshield. If replacing the thermostat dosen't work ,It is most likley the heater core.Don't worry it's not as bad as you think.You will need to flush it ...

...hot coolant through to the radiator. This means that the thermostat was replaced . Point of interest here . Water pumps no not cause over heating. They will have seal and bearing failure but other ...

...tube and raise it out of the way. Remove the steel line that goes to the radiator surge tank from the thermostat housing. Now the fun part. With a 13MM box end wrench, loosen the lower bolt from the ...

...hot)and temp where the thermo should be open. Possibly the radiator needs sending out for the top or side tank to be removed and each tube cleaned out.this is a lot more effective than trying to ...

...hot yet. now driver around the block, 1 lap come one, and let it cool, (side tank , clear, is 1/2 full) now when 100% cold, take off the rad cap makes add AF again. on the old 4L ive had to do this 3 ...

...HOT region (cross-hatched area) on the oil level indicator. The fluid level will be approximately at the upper COLD hole of the dipstick at 70° F fluid temperature. NOTE: Engine and Transmission ...

...hot weather conditions allowing incoming air to remain colder and therefore denser for better fuel/air intake and mixture delivering more power and better performance. Although this type of cooling ...