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Home >> GMC >> 1997 >> C3500 HD 7.4 J, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls - System & Component Testing - 6.5L) >> Miscellaneous Pcm Controls >> Scan Tester

Scan Tester

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A variety of information is transmitted through Data Link Connector (DLC). This data is transmitted at a high frequency which requires a Tech 1 Scan Tester (94-00101A), appropriate cartridge kit and vehicle interface module kit, or other scan tester for interpretation. Several scan testers (scan tools) are available for diagnostic work. Scan testers other than Tech 1 scan tester will function and provide information for diagnostic work.

COOLING FAN RELAY LOCATION

Application Location
"C" & "K" Series In Engine Compartment Fuse/Relay Block, Near Anti-Lock Brake Control Module