What is causing my GMC to advance the timing about 25° when I plug the wire under the dash together?
5

Asked by revcase Apr 28, 2015 at 07:25 AM about the 1995 GMC Sierra 1500 C1500 SL Extended Cab SB

Question type: Maintenance & Repair

I disconnected the tan/black wire before setting the timing. I set the timing to 0°. Shut it
down, connect the wire back, and when I check the timing, it advances about 20°. If I
disconnect the wire again, it goes back to 0°. Thanks for any help in advance!

1 Answer
10

larrygrab answered 8 years ago

when you set the timing to zero you are setting it at a starting point for the computer. Connecting the wire now allows the computer to manage the timing for optimum performance at all times

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,360
  • #2
    dragonflyoffshore
    Reputation
    11,530
  • #3
    John Saffrahn
    Reputation
    11,450
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
312 Great Deals out of 13,846 listings starting at $3,888
Used GMC Yukon
14 Great Deals out of 965 listings starting at $6,900
Used Toyota Tacoma
41 Great Deals out of 839 listings starting at $9,975
Used Dodge RAM 1500
3 Great Deals out of 83 listings starting at $5,000
Used Chevrolet Tahoe
15 Great Deals out of 774 listings starting at $7,499
Used Chevrolet Camaro
12 Great Deals out of 476 listings starting at $11,999

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.