03/08/2026
It started with a tow truck.
Late in the day, a ’98 Chevy rolled into the lot on a trailer like a forgotten relic being delivered to the wrong grave. I was told it hadn’t run in three years… and in the six months before it died, it had already chewed through two transmissions. That alone was enough to make any mechanic uneasy.
But the real horror started when I hooked up the scanner.
The numbers began to speak… and they didn’t match.
The VIN stored in the ECM didn’t belong to the truck sitting in front of me. Somewhere in its past life, someone had swapped parts, rewired its identity, and left behind a digital ghost. The only way forward was to reprogram the module and rewrite the VIN, like stitching the truck’s identity back together.
But that was just the beginning.
Next came the crankshaft position sensor relearn—a simple process in theory. The scanner just needed the engine to reach 70 degrees before it would cooperate. But the thermostat had other plans. It refused to do its job, forcing me to replace it before the relearn could even begin.
Then I dug deeper.
That’s when I found it.
The crankshaft position sensor was broken, shattered where it sat buried in the timing cover. On this year and model, that sensor has a nasty reputation for snapping off and taking the timing cover with it. Which meant the cover had to come off.
And to reach the timing cover?
The water pump had to come off.
Then the harmonic balancer.
Then the serpentine belt—cracked like dried skin after years of neglect.
Rusty clamps clung to hoses like they didn’t want to let go. And when I looked into the radiator… it wasn’t coolant staring back at me.
It was sludge.
Thick. Dirty. Years of neglect sitting in the cooling system like swamp water in a forgotten well.
At that moment it became clear: this wasn’t just a repair.
This was an exorcism.
Every bolt turned uncovered another layer of the truck’s troubled past. Years of shortcuts, neglect, and mechanical sins waiting to be brought back into the light.
But that’s the thing about old Chevys.
They might haunt you for a while…
but with enough patience, the right tools, and a little mechanical courage—
even the scariest projects can be brought back from the dead.