Suburban dilemma
Last year I bought an 08 suburban 2500 with 51,000 miles. Body in excellent condition. I planned on using this to tow my trailer and be an everyday driver for my wife for many years to come. It ran an...
Forum Discussion
Fryer5 wrote:
snip...
1. The stupid thing has ghost in it. An electrical problem that randomly completely resets the computer. The clock will be reset. No error lights on the dash. Sometimes when this happens it will not start. Turn key, NOTHING, no click, no dim lights. NOTHJNG. wait 1!hour, starts right up. It has done this to me twice while driving, leaving me and my family stranded on the side of the interstate. Once while pulling the camper.
Key to me...the only way to 'completely reset the computer' is to remove power to the computer...and the computer power circuit most likely has a large capacitor to both smooth (filter voltage spikes, transients, etc) and hold power for a few seconds or more...so that means power gone not just a second or so, but longer
That is where the problem is and where my suggestions started...with the power source...the battery
Has the battery itself been load tested ?
If it is bad...it could have also load dumped the alternator making it kill subsequent 'new' batteries
Or the circuit between the battery and the computer has an intermittent connection(s)
Since bought used...check if the fuse-able link has been replaced...or somehow compromised...or maybe previous owner(s) installed a battery disconnect system...stuff like that is my now best guess is the culprit
