Thread: 1997 Chevy Pickup Won't start

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Thanks for the help guys got it going the pcm was shot and the fuse was blown in the under hood fuse block the second pcm worked great the morel of the story don't trust that the parts you get from the store are good and check the fuses more than once

Thanks
shaggy

Originally posted by SHAGGY
Thanks for the help guys got it going the pcm was shot and the fuse was blown in the under hood fuse block the second pcm worked great the morel of the story don't trust that the parts you get from the store are good and check the fuses more than once

Thanks
shaggy

any time you computer wont talk to you is got to be the computer bad or a blown fuse. its no need to go any futher until you get that fixed and the check engine light should come on when you cut the key on or you computer is not doing what it should. its been a lot of computers replaced because of a 1.00 fuse though.

As per Robots post, a computer in a 97 should not be shot. its only 8 years old. Most of the vehicles ive owned have had some type of computer in them, and ive never owned anything newer than an 87. Also, ive never had a bad computer. But Anyway, Check for a reference signal to your CKP. Many motors seems to go due to a lack of ignition due to a bad Crankshaft position sensor. Check for signal when the motors warm. Secondly, check for voltage coming to the computer itself. At the fuse box, and if tha checks, go to the computer itself. Finally, check for faulty grounds. Either check between the body and frame for voltage or check from the casing of the computer to the body of the vehicle. Should all that fair, run a self diagnostic procedure on the computer itself. Should be in the manual.

Originally posted by drg84
As per Robots post, a computer in a 97 should not be shot. its only 8 years old. Most of the vehicles ive owned have had some type of computer in them, and ive never owned anything newer than an 87. Also, ive never had a bad computer. But Anyway, Check for a reference signal to your CKP. Many motors seems to go due to a lack of ignition due to a bad Crankshaft position sensor. Check for signal when the motors warm. Secondly, check for voltage coming to the computer itself. At the fuse box, and if tha checks, go to the computer itself. Finally, check for faulty grounds. Either check between the body and frame for voltage or check from the casing of the computer to the body of the vehicle. Should all that fair, run a self diagnostic procedure on the computer itself. Should be in the manual.

drg read the thread, the truck is fixed and he has been driving it a week now.

Originally posted by DennyW
Drg, Just because you are lucky, and had no problems on computers, means just that. Yes, they do go bad. The early ones has piss poor drivers, and would burn out. Ask GM, hahaha. I remember changing a couple because of a leaky windshield.
Oh, forgot to mention, when I worked at gm dealership, in the early days, we used to change them under warranty on new cars.

they had major problems with the late 80s computers.

Originally posted by drg84
As per Robots post, a computer in a 97 should not be shot. its only 8 years old. Most of the vehicles ive owned have had some type of computer in them, and ive never owned anything newer than an 87. Also, ive never had a bad computer. But Anyway, Check for a reference signal to your CKP. Many motors seems to go due to a lack of ignition due to a bad Crankshaft position sensor. Check for signal when the motors warm. Secondly, check for voltage coming to the computer itself. At the fuse box, and if tha checks, go to the computer itself. Finally, check for faulty grounds. Either check between the body and frame for voltage or check from the casing of the computer to the body of the vehicle. Should all that fair, run a self diagnostic procedure on the computer itself. Should be in the manual.

First of I really appreciate every ones help with this.

You are most likely 100% right but, What acutely happened was the fuel pump took a bump and the truck was running with only 45 psi fuel presser and it needs 55 or 65 psi I drove it home 20 some miles at an idle the computer was working over time setting and resetting for the lack of fuel pressure. That finally toasted it. The new one I got from the part store was bad from the factory or damaged in shipment??? I called the guys over at CARDONE and talked to Steve Tortu Manager of Tech Support These guys have got it going on. He hooked me up with a brand new PCM straight from Delphi. I slammed it in and it’s been running like a clock ever since.

PS. It took me awhile to figure out that the bad PCM that came from the factory popped the PCM fuse.