GMC 1994 truck ignition column?

Asked by Leslie Jan 11, 2020 at 02:05 PM about the 1994 GMC Sierra 1500 C1500 SLE Standard Cab SB

Question type: Maintenance & Repair

I have a 1994 GMC Sierra SLE
pick up truck. Ithe truck was
having difficulties turning the key
to start.
It wouldnt pass that last click to
make it start. I'd try a few times
and it would start. Today , when I
went to park truck, I couldnt turn
key to get the truck off or key out
of ignition. I noticed on the way
home some of my gages were not
working. The speedometer, air,
and radio not working. But the
only light that was on  in console
was the emergency break light (
which was not on). Had to
disconnect battery  to stop truck
and still  did not stop running.
Finally ended up turning key to
start truck while truck was
already running and that killed the
engine. What do you thi k the
problem is??

1 Answer


gasoline engine can't run w/o spark, unless it is dieseling? If key won't kill it, I check for primary voltage to ignition coil, shouldn't be any voltage with key off. In the old days, before computer vehicles, I used to burn drip, they called it, my vehicle would diesel like crazy when you tried to kill it. I'd put in drive, that put enough load on the engine to kill it. Then I put it back in park. Fuel octane can effect dieseling--high compression--hot spot in cylinder? If key cylinder giving you a problem, maybe you need a new one? Also check shift interlock.

Your Answer:

Own this car?

Share your experience with others.

1994 GMC Sierra 1500

Review another car

CarGurus Experts

  • #1
  • #2
  • #3
    John Saffrahn
View All

Know more, shop wisely


Related Models For Sale

Used Ford F-150
5,744 Great Deals out of 127,910 listings starting at $2,495
Used Toyota Tacoma
1,532 Great Deals out of 23,090 listings starting at $2,599
Used Dodge RAM 1500
78 Great Deals out of 1,748 listings starting at $1,400
Used GMC Yukon
717 Great Deals out of 10,599 listings starting at $2,995
Used Chevrolet Tahoe
1,187 Great Deals out of 22,288 listings starting at $3,700

Used Cars for Sale

2024 GMC Sierra 1500 For Sale
28 Great Deals out of 32,073 listings starting at $28,395
2023 GMC Sierra 1500 For Sale
262 Great Deals out of 6,341 listings starting at $32,000
2022 GMC Sierra 1500 For Sale
168 Great Deals out of 1,820 listings starting at $29,888
2021 GMC Sierra 1500 For Sale
270 Great Deals out of 3,709 listings starting at $18,996
2020 GMC Sierra 1500 For Sale
212 Great Deals out of 2,490 listings starting at $19,980

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.