Transmission slips only in first gear

Asked by Coolweatherj Aug 01, 2019 at 03:00 AM about the GMC C/K 1500 Series

Question type: Maintenance & Repair

It is started on a raod trip from California after going through higher elevation passes. 1st gear slipping from a stop, especially when temperatures got over 220. Slipping continued worse after warming up the whole trip home, down to around 600ft above sea level. After being home a few days, it barely does it anymore, even over 220 degrees and and hour of driving. I thought I'd need a new tranny but now I'm concerned it's something giving me the wrong signals from being as high as 9000 ft. Also I have no idiot lights or codes coming on and the fluid hasn't darkened or smelling bad. It's 1700 for a new tranny and I can't tell anymore if that's the cause. Also it has no emblems other than gmc 1500, registration says only k1500 and that's not an option looking for for parts. Even here k series doesn't give 94 as an option and all the title says is k1500.

1 Answer


For a 1994 truck and the symptoms you have, I would bet the transmission is slowly wearing out. I'd have a transmission mechanic diagnose the truck if you are concerned, or just drive it till it won't shift at all.

Your Answer:


GMC C/K 1500 Series Experts

  • #1
  • #2
    G A Arne
  • #3
View All

Find great deals from top-rated dealers


Related Models For Sale

Used GMC Sierra 1500
80 Great Deals out of 3,405 listings starting at $4,595
Used Ford F-150
97 Great Deals out of 7,106 listings starting at $1,009
Used GMC Sierra 1500 Limited
39 listings starting at $33,995
Used Chevrolet Silverado 1500
69 Great Deals out of 4,207 listings starting at $2,000
Used Chevrolet Silverado 2500HD
9 Great Deals out of 1,154 listings starting at $3,000
Used GMC Yukon
11 Great Deals out of 511 listings starting at $699
Used RAM 1500
174 Great Deals out of 19,073 listings starting at $5,900
Used GMC Sierra 2500HD
10 Great Deals out of 821 listings starting at $6,500
Used Toyota Tundra
13 Great Deals out of 411 listings starting at $8,978

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.