Two problems related to water pump have been reported for the 2004 Chevrolet Silverado 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Chevrolet Silverado 1500 based on all problems reported for the 2004 Silverado 1500.
The abs kicks in at low speeds to where it makes a grinding noise and have a grinding feel at the door pedal even after having the brakes and rotors replaced. The dash cluster gauges stop working one by one,only the heat gauge work off and on. The engine begins to over heat when sitting in idle 10 minutes, sometimes 5 minutes depending on how hot it is,and the air conditioning starts to blow hot air but it begins to cool off once you start back driving. I have had the water pump checked,some had the thermostat replaced and it still does it only in the summer.
Transmission will not shift out of 1st gear. Took to shop had been told speed solenoid, replaced both, flushed tranny & changed oil. Only to find out that need a new transmission. This truck has been nothing but trouble from the minute we took the plastic of the seats. Brakes, bearings fuel lines, springs water pump etc you name it have receipts for all of it. Under warranty & after. This truck is a lemon. GMC will do nothing, dealer just puts head down & walks away because he knows major issues in the first 90 days of owning & continues to this day. This pickup has never left the blacktop. No offroading, not hunting or anything else, no vacations in fear of being stranded. Junk junk junk & now I get to try to figure out what to do when christmas is 10 days away. I don't think my children want a new chevy vehicle ever.