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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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How can i upgrade my pcm on my 98c1500, my c1500 is a 1998,

Customer Question

How can i upgrade my pcm on my 98c1500
JA: What year is your CL500?
Customer: my c1500 is a 1998
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: I am trying to use a jet performance programmer but the programmer says no communication
JA: Anything else you think the mechanic should know?
Customer: it is a 5.7L motor and the programmer is for the truck
JA: How many miles are on the car? Is it an automatic or a manual transmission?
Customer: 270,000 miles and it is an automatic
Submitted: 1 year ago.
Category: Chevy
Expert:  Gary replied 1 year ago.

I am sorry your having this problem

my name is Gary

will a basic code reader pull codes and communicate wot the computer ?

with the key ON does terminal # 16 show 12 volts at it at the ALDL connector ?

Customer: replied 1 year ago.
i have used a basic code reader and it works fine but my jet performance programmer will not communicate with my computer
Expert:  Gary replied 1 year ago.

with the key ON does terminal # 16 show 12 volts at it at the ALDL connector ?

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

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