Component Testing

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

Refer to Test Probe Caution .

NOTE:

Before testing the coax cable, check the cable exterior for being pinched, cut, damaged, or having loose connections at the components, which can cause reception issues.

To prevent false reading when testing the center coax terminals, use care not to ground the test probe on the outer housing/shield.

Coax Cable Test

Ignition OFF, disconnect the GPS and cellular phone coax cable at both components.
Test both for less than 5 Ω between both ends of the coax cables center terminals.
- If greater than the specified range, replace the failed coax cable.
Test for greater than 10k Ω between the coax cable center wire and the outer coax shield.
- If less than the specified range, replace the coax cable.