1996 GMC Suburban tranny

BIGGDAWG59

MEMBER
1996 GMC SUBURBAN
5.7L
V8
4WD
AUTOMATIC
160,000 MILES

My tranny want go in reverse. When I put it in reverse it drives forward like its in drive. It does this in every gear. It also makes a noise underneath the truck grinding type of noise. Itvwas working fine going to church I drobe it on the highway to church. I had the cruise control module on when chuch was over theit took off fine soon as I got on IH35 it started to stall out on me. Then it goes inndrive in all gears. And massair control w as bad I replaced bythe but what do I do about the transmission

Friday, September 19th, 2014 AT 5:28 PM

3 Replies

HMAC300

MECHANIC
48,601 POSTS

Scan for codes and see if trans is shifting into reverse it may be a cable problem.

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Saturday, September 20th, 2014 AT 5:54 AM

BIGGDAWG59

MEMBER
2 POSTS

Thanks brother, and yes thats what it is. I had it scanned for codes this morning. It looks like a easy job from the look of a few videos on youtube. Rather expensive at some of thr shop I called and being that I have two big boys in college playing football, and a daughter in her senior year and she running track in California next year, a junior and he do the most. Sports, band, choir and work sorry bro. So it pretty much is going like the cables on the carbonrater right?

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Saturday, September 20th, 2014 AT 11:59 AM

HMAC300

MECHANIC
48,601 POSTS

Actually there are two cables and it's very important not to lose a little tiny piec on first cableotherwiase you need that one as well. We dont' have any pics so hope these instructions are suffiecient for you.

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