2000 Chevy Blazer passlock

WAFER64

MEMBER
2000 CHEVROLET BLAZER
6 CYL
2WD
AUTOMATIC
85,000 MILES

Have done everything possible to figure out this vehicle but to no avail nothing seems to work charged system up fully, tried 10 minute relearn over a half a dozen times, tried to check for resistance in passlock can't get a reading this is getting very frustrating I need some help?

3 Replies

CARADIODOC

MECHANIC
33,916 POSTS

Hi Wafer64. Welcome to the forum. These systems are real effective at keeping owners from driving their trucks. Not sure where you're measuring, but a common problem with Pass Lock sensors is broken wires in the steering column, especially if you move the tilt wheel a lot. If your system still uses the pellet in the key, a poor man's fix is to measure the pellet's resistance, then cut the wires at the base of the steering column and solder in a resistor of the same value.

Caradiodoc

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Friday, May 14th, 2010 AT 2:00 PM

WAFER64

MEMBER
11 POSTS

My blazer does not have it in the key so what else do I need to check? Just don't have the money to take it to a garage

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Friday, May 14th, 2010 AT 5:53 PM

CARADIODOC

MECHANIC
33,916 POSTS

I've read many times about defective Pass Lock sensors. As I recall, the pellets in the keys are on older vehicles. Still, broken wires are very common in the steering column. I'm going to have to research the testing procedure because there should be a way to do it from the connector at the base of the steering column instead of taking the upper column apart.

It will take me a while to put my hands on a service manual. Jack me up with a followup message if I don't get back to you. In the meantime, if you have tilt-wheel, move the wheel to a different position and try to start the engine. If that works, it will pretty conclusive there are broken wires.

Caradiodoc

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Friday, May 14th, 2010 AT 8:54 PM