The Flasher Relay is under the dash, near the steering column. It is snapped into a clip that is mounted on column support on the left side. It uses a standard flasher relay (round), common on all GMC/Chev products of that general age. A new electronic heavy duty flasher is available at most auto parts stores that will handle up to 10 bulbs.
The 1998 GMC signal flasher relay switch will be behind the drivers side dashboard. The signal flasher relay switch will be on the left-hand side of the gas pedal.
Type your answer here... crawl under drivers side step on frame rail
A 2007 GMC TopKick, also known as the Chevrolet Kodiak. The TopKick can be purchased in an "Ironhide" package that is built identically to the truck in the movie. It will not, however, transform into a giant alien robot.
250 foot pounds
Most likely the turn signal flasher.
Some of the main features of a GMC Topkick bicycle include, dual suspension and 21-speed gear. One can purchase this bicycle from reputable online retailers such as Amazon.
2007 GMC Topkick 4x4 "Ironhide Edition"
It was a modified 2007 GMC C4500 4x4 Crew Cab TopKick Edition.
Bad flasher unit, bad relay, bad wiring... any of those.
the same as check engine
If the bulbs check good, replace the flasher relay.
The flasher relays are in the back of the glove compartment. They are behind a piece of plastic labeled "Relay Access" You will need to use a screwdriver to pry the bottom tabs of the plastic to pull it out. You will see three small black cubes. Those are your flasher relays. They are a standard-type relay that should only cost a few dollars at an automotive parts store.