Is GM Tech2 GM Diagnostic Scanner available on my Cadillac year 1996?

Bummer deal! Disconnect the negative battery cable for 30 seconds or so an reconnect it. This clears the codes and it takes several days for the computer to relearn. Then see if a code lite come on and check that out, if so. Did you gap the plugs properly? too wide or too narrow will trigger a code. A dirty combustion area results from your problem. I always use the product treatment at this web page to be sure its not residues causing your problem in one area or another. Hope this helps.
http://www.auto-tune-up-and-repair-options.com/Tune-up-Products.html

try to check the main relay.


GM Tech2 GM Diagnostic Scanner for GM SAAB OPEL SUZUKI ISUZU Holden

GM Tech 2 support for on-board diagnostics on all GM systems 1992 thru 2011.The following GM vehicles utilize the CAN interface:

05 Buick Allure (3.6L)
05 Buick LaCrosse (3.6L)
05 Buick Rainier (5.3L)
04-05 Buick Rendezvous (3.6L)
04-05 Cadillac CTS (3.6L)
04-05 Cadillac SRX (3.6L / 4.6L)
04-05 Cadillac XLR (4.6L)
05 Cadillac STS (3.6L / 4.6L)
05 Chevrolet Cobalt (2.2L)
05 Chevrolet Corvette (6.0L)
05 Chevrolet Equinox (3.4L)
05 Chevrolet TrailBlazer (5.3L)
05 Chevrolet SSR (6.0L)
04 Chevrolet Malibu (Body/Chassis only)
05 Chevrolet Malibu (3.5L)
05 GMC Envoy (5.3L)
05 Pontiac G6 (3.5L)
05 Pontiac GTO (6.0L)
05 Pontiac Pursuit (2.2L)

This gm tech2 can do it.

I suggest you use GM Tech2 diagnostic scanner
check your car and clear fault code.