I used to drive this truck hard every day as a ranch truck. It has been the best performing 1/2 ton 4X4 I have ever owned. There is currently 340000 miles on the original 350 engine, and it still passes CA smog tests with flying colors. The auto tranny has to be rebuilt every 100000mi. Have had electrical problems with lights and the heater controls. Other than that this is a nice truck …

Great truck

wingswomennbeer, 09/13/2007

1991 GMC Sierra 1500 SLE 2dr Extended Cab SB (4.3L 6cyl naturally aspired 4M)

Bought this truck about two years ago and have not had a problem since. Dropped a brand new engine and transmission in and it runs perfect. I have flowmaster mufflers coming off of edelbrock headers get 24 miles to the gallon on the highway with a 350 v8 which is unheard of. Runs perfect and no imperfections or complaints at all.

I'm a GM truck man, that's all I drive

chuck rogge, 06/26/2005

1991 GMC Sierra 1500 2dr Extended Cab 4WD SB (4.3L 6cyl naturally aspired 4M)

I bought the truck from a friend, and I had to put a new tranny in it before I could drive it. That is all I have had to do the truck. It has been a really good truck for me. I used to drive it to work(1200 miles a month) over a mountain pass and never let me down.

Good worker

jankord, 10/27/2004

1991 GMC Sierra 1500 SLE 2dr Regular Cab SB (4.3L 6cyl naturally aspired 4M)

Even after over ten years on the original engine, I just had to put head gaskets in and adjust the tension on the shift cable. It has over 150,000 miles and it is still going. The white paint is chipping away and has since just a couple years after it was new.

We have a limited number of reviews for the 1991 GMC Sierra 1500, so we've included reviews for other years of the Sierra 1500 since its last redesign.

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1991 Sierra 1500 Highlights

Type:

Regular Cab

Trim:

SLX

Engine Type	Gas
Combined MPG	17 MPG
Cost to Drive	$225/month
Drivetrain	rear wheel drive

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Safety

IIHS Rating

The Insurance Institute of Highway Safety uses extensive crash tests to determine car safety.

Small Overlap Front Driver-Side Test
Not Tested
Small Overlap Front Passenger-Side Test
Not Tested
Moderate Overlap Front Test – Original
0
Moderate Overlap Front Test – Updated
Not Tested
Side Impact Test – Original
Not Tested
Side Impact Test – Updated
Not Tested
Roof Strength Test
Not Tested
Rear Crash Protection / Head Restraint
Not Tested

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1991 GMC Sierra 1500 Review

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1991 Sierra 1500 Highlights

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