1999 GMC Sierra 1500 Consumer Review: I'm impressed

1999 GMC Sierra 1500 Extended Cab - Consumer Review

Average Consumer Rating

36 Total Reviews

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Build Quality
Reliability Value
I'm impressed
By Bob on


1999 GMC Sierra 1500 SLT 3dr Extended Cab SB


My first full sized truck. 5.3L engine has been great. The truck has 80k miles and has had very few mechanical problems. I easily average 16 to 18 mpg around town and 20 to 21 mpg on hwy which is darn good for a full sized truck.

Best Features

Comfort and power plus fuel economy for a large vehicle. Excellent overall reliability so far (7 years and 80k miles). Great engine/transmission access and design. Good brake design. Good tow vehicle.

Worst Features

Wind noise from rear side windows. Paint clear coat (I've noticed minor defects as it ages). The single mechanical problem has been the drivers-side power window motor/cable assembly. I've changed it twice. Unacceptable! Drive shaft slightly imbalanced at low speed towing uphill.
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