1989 GMC Sierra SLT review from North America
"Minor engine mods and this truck will perform, out of the hole this truck hauls"
What things have gone wrong with the car?
Fuel pump.
Starter.
Alternator.
Belt tensioner, Belt.
Upper and Lower Ball joints.
CV Joints, U Joints all around.
Pitman arm, idle arm, center link, Tie rods.
Exhaust
Intake manifold gaskets.
Valve cover gaskets.
Rear brake drums and shoes changed for the first time at 128,000 miles!
New Radio.
Bench seat is terrible, especially when refurbished with Vinyl... made a sharp turn and I was in the passenger seat.
Brake lights actually disintegrated, due to poor harness design.
General comments?
I threw a paint job and chrome rims from a 2001 GM truck on this Regular cab, flare-side bedded beast and she looks great!
This truck is quick, but put in a performance air filter, (and intake... although most could opt to just flip the air cleaner cover over), and a Borla exhaust and you will not only haul tail, you'll also get better mileage.
Transmission and rear end are like a Rock, but they need regular service to maintain this. Drop the pan and filter at least ever 30,000 miles over 100,000.
I drive this truck hard! Don't think all the stuff I've replaced has been in vain, these are things that normally go wrong with older vehicles. I expect get at least another 100,000 miles out of this truck, and then put it in a garage for my son.
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![]() ![]() | 1989 - Sierra 5.7L Gasoline EFI I love my pickup. |
![]() ![]() | Prime vehicle |
| Would you buy another car from this manufacturer? | Yes |
| First year of ownership | 2000 |
| Most recent year of ownership | 2003 |
| Engine and transmission | 5.7 (350 Small Block!) Automatic |
| Performance marks | 10/10 |
| Reliability marks | 8/10 |
| Comfort marks | 8/10 |
| Dealer Service marks | |
| Running Costs (higher is cheaper) | 5/10 |
| Distance when acquired | 120000 miles |
| Most recent distance | 138000 miles |
| Previous car | Ford F150 |
| Date of Entry | 1st January, 2003 |

