1999 Gmc Z-71 problems

General information about Gmc-Z-71
Overview of popular issues
Analysis of common problems
Сomplaints list

The Chevrolet Silverado is a range of trucks manufactured by General Motors under the Chevrolet brand. Introduced for the 1999 model year, the Silverado is the successor to the long-running Chevrolet C/K model line. Taking its name from the top trim level from the Chevrolet C/K series, the Silverado is offered as a series of full-size pickup trucks, chassis cab trucks, and medium-duty trucks. The fourth generation of the model line was introduced for the 2019 model year.

The Chevrolet Silverado shares mechanical commonality with the identically related GMC Sierra; GMC ended the use of the C/K nomenclature a model generation prior to Chevrolet. In Mexico, high-trim level versions of the Silverado use the Chevrolet Cheyenne name (not to be confused with the 2003 concept). Competing against the Ford F-Series, Ram Pickup, Toyota Tundra, and Nissan Titan, the Silverado is among the best-selling vehicles in the United States, having sold over 12 million trucks since its introduction in 1998 as a 1999 model year.

History

The Silverado nameplate made its debut for the 1975 model year, becoming the top trim level on all Chevrolet C/K trucks, slotted above Custom Deluxe, Scottsdale, and Cheyenne. For the 1968 model year (seven years before the Silverado), GMC C/K trucks used variations of the Sierra name (Sierra, Sierra Classic, Sierra Grande, and High Sierra). Even after the C/K series officially ended, GM still uses the CK and the CC in their current model codes, to denote a two-wheel drive (CC), and four-wheel drive (CK).

For the 1988 GMT400 model architecture, Chevrolet retained the C/K model nomenclature, with GMC branding its full-size line as Sierras. While sharing the same body and chassis, the model chronology of the Silverado and Sierra are different, with five generations of the Sierra, while four of the Silverado.

In 2018, at the NTEA Work Truck Show in Indianapolis, Indiana, Chevrolet unveiled the first medium-duty Silverado, expanding the model line to a 4500HD, 5500HD, and 6500HD chassis cab. Largely the successor to the 2003–2009 GMT560 chassis, the medium-duty trucks are exclusive to Chevrolet, with no plans for an equivalent GMC version. Instead, Navistar International (now partnering with GM) would sell the medium-duty trucks as a rebadged counterpart, called the CV. This is in fact a very similar nod to how the Avalanche did not have a GMC Yukon–based equivalent, but instead, Cadillac would take its place as the former's rebadged counterpart, the Escalade EXT.

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Common 1999 Gmc Z-71 problems

Based on complaints from owners of the GMC Z-71 1999, several common problems have been reported. Here is a detailed list of these issues:

Electrical Problems: Owners have reported issues with the electrical system, such as erratic behavior of the dash, dimming lights when using certain features like the blower or rear defrost, and key fob malfunctions. These problems can be frustrating and impact the overall reliability of the vehicle.
4X4 System Malfunction: Some owners have experienced issues with the 4X4 system, including a lack of operation, non-illuminating transfer case range switch buttons, and a service 4X4 message displayed on the driver's console. This can affect the off-road capabilities of the vehicle and overall drivability.
Engine Misfire: Complaints have been made about engine misfires, particularly when the vehicle is warm. Symptoms include poor acceleration, stalling, and loss of power. Despite various attempts to fix the issue like replacing components such as the EGR solenoid, fuel pressure regulator, and ignition parts, the problem persists.
Transmission Problems: Owners have reported transmission issues with the Chevy Silverado series, which the GMC Z-71 1999 is a part of. These problems include high fuel consumption, selector switch failure, and transmission issues emerging after the vehicle has covered significant mileage. Transmission problems can significantly impact the vehicle's performance and safety.
Knock Sensor: The knock sensor, located under the intake, has been identified as a common problem. While it may not affect drivability, a faulty knock sensor can trigger a check engine light. Replacing the knock sensor can be challenging due to its location.
Wheel Bearing and ABS Issues: Wheel bearing problems have been noted, leading to humming or growling noises while driving, especially when turning. This issue can also affect the ABS system, causing activation at slow speeds. Addressing wheel bearing issues promptly is crucial for safety and vehicle performance.

These common problems reported by owners of the GMC Z-71 1999 highlight various challenges that can impact the vehicle's reliability, performance, and overall driving experience. Addressing these issues promptly through proper diagnosis and repair is essential to ensure the longevity and safety of the vehicle.

What years did the GMC Sierra have transmission problems?

GMC's Sierra 1500 is one of the toughest pickups there is, offering a plethora of powertrain options to suit buyers' needs. However, owners report transmission problems in models from 2009 to 2013, including hesitating between shifts.

How many miles can a GMC Sierra Z71 last?

If you take care of your GMC Sierra, you can expect it to last around 250,000 miles without too many worries. Keep a careful watch for rust, corrosion, and other issues, and deal with troubles as soon as they appear to give it the best shot at survival.

Which GMC 1500 engine is the best?

The 6.2L EcoTec3 V8 is the engine for you if you're looking for the beefiest horsepower possible in the GMC Sierra 1500 lineup — 420 horsepower. You'll also find that it boasts the second-highest GMC Sierra 1500 towing capacity at 13,100 pounds.

Does GMC Sierra have engine problems?

The 2022 GMC Sierra engine issues are one of the largest GMC scandals in recent years. It is more than likely that customers will be dissuaded from buying this truck in the near future but hopefully, General Motors will manage to address all the issues quickly.

What is the most common problem with GMC?

Nearly every GMC model experiences issues with its HVAC system. The air conditioning condenser on the 2015 Sierra 1500 is known to fail. It seems the Envoy is the only model that escapes this issue.

How many miles can a 1999 GMC Sierra last?

With decent care, you'll get a baseline mileage expectancy of 200,000 miles, but for many Sierras, they're just getting started at that number. It's not unusual to find them with 400,000 miles on the odometer, with the original transmission and engine.

What year is the most reliable GMC?

The Best GMC Pickup Trucks, Ranked On Reliability And Towing...

8 2020 GMC Canyon V-6. ...
7 2020 GMC Sierra 1500. ...
6 2011 GMC Canyon 3.7L. ...
5 2013 GMC Sierra 1500. ...
4 2023 GMC Sierra 2500HD Duramax. ...
3 2012 GMC Sierra 1500 6.2L. ...
2 2007 GMC Sierra 3500 Classic Duramax. ...
1 2016 GMC Sierra 3500HD Duramax.

What years did the GMC Sierra have transmission problems?

1999 Gmc Z-71 car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Gmc Z-71 problems, we found that the most common problems with these 2023 model year vehicles are:

Service brakes problems
Hydraulic problems
Visibility problems
Parking brake problems
Air problems

The graph below shows statistics for all 1999 Gmc Z-71 vehicle components and the number of complaints received.

1999 Gmc Z-71 complaints

The NHTSA has received 11 complaints about various vehicle components related to the 1999 Gmc Z-71.

2005-09-02

SERVICE BRAKES, HYDRAULIC PROBLEM

Date Of Incident: 2005-08-30
VIN: 2GTEK19T1X1
Components: SERVICE BRAKES, HYDRAULIC
Summary: SPORADIC BRAKE FAILURE "LOCK UP" UPON SUDDEN BRAKING

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2005-04-28

VISIBILITY PROBLEM

Date Of Incident: 2005-03-14
VIN: 1GTEK14T0XZ
Components: VISIBILITY
Summary: THE ELECTRIC WINDOW DOES NOT WORK. WHEN INSPECTED IT WAS DETERMINED TO BE DUE TO THE CABLE. *AK *SC *JB

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2003-11-26

SERVICE BRAKES, HYDRAULIC PROBLEM

Date Of Incident: 2003-11-20
VIN: 1GTEK14TXXZ
Components: SERVICE BRAKES, HYDRAULIC
Summary: WHILE BRAKING THE ANTILOCK BRAKES FAILED AND CAUSED EXTENDED STOPPING DISTANCES. THE CONSUMER PULLED THE VEHICLE OVER AND REMOVED THE ANTI LOCK BRAKE FUSE IN ORDER FOR THE ANTI LOCK BRAKES TO WORK PROPERLY. THE DEALERSHIP WAS NOTIFIED BUT THE PROBLEM WAS NOT RESOLVED. *NLM

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2003-11-11

SERVICE BRAKES, HYDRAULIC PROBLEM

Date Of Incident: 2003-11-10
VIN: 1GTEK19T2XE
Components: SERVICE BRAKES, HYDRAULIC
Summary: THE ABS CONTROL UNIT WILL NOT STOP RUNNING.*AK

Add Complaint

2003-11-06

SERVICE BRAKES, AIR PROBLEM

Date Of Incident: 2003-11-01
VIN: 1GTEK19T5XE
Components: SERVICE BRAKES, AIR
Summary: ABS LIGHT CAME ON. NOISE FROM UNDER THE TRUCK CONTINUES AFTER SHUTTING ENGINE OFF! HAD TO PULL THE FUSE TO SHUT THE ENGINE OFF. $1000+ REPAIR BILL.*AK

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2002-12-06

VISIBILITY PROBLEM

Date Of Incident: 2002-11-12
VIN: PLEASE PROV
Components: VISIBILITY
Summary: CONSUMER STATES THAT THE DRIVERS WINDOW DROP DOWN AND NOTICE THAT A BOLT WAS LOOSE ON THE GUIDE TRACK, AND A MONTH LATER THE PASSENGER SIDE WINDOW DROP DOWN. TS

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2002-02-20

PARKING BRAKE PROBLEM

Date Of Incident: 2024-11-24
VIN: 2GEKJ19T7X1
Components: PARKING BRAKE
Summary: WHEN APPLYING EMERGENCY/PARKING BRAKE, PEDAL WAS INOPERATIVE, CAUSING VEHICLE TO ROLL BACK. THERE WAS NO PEDAL RESISTANCE ALL THE WAY TO THE FLOOR. *JG *AK

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2001-10-04

SERVICE BRAKES, HYDRAULIC PROBLEM

Date Of Incident: 2001-09-01
VIN: NOT AVIALBL
Components: SERVICE BRAKES, HYDRAULIC
Summary: BRAKES PULSATE AND MAKE A GRINDING NOISE WHEN APPLIED. MANY TIMES TAKEN IN FOR SERVICE, BUT RUST WAS NEVER DETECTED. WHEEL SHOULD HAVE BEEN PULLED OFF EACH TIME. CONSUMER WAS TAKING ACITON WITH MANUFACTURER. PLEAS ADD VIN. *AK

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2000-11-03

PARKING BRAKE PROBLEM

Date Of Incident: 2000-06-06
VIN: 2GTEK19T4X1
Components: PARKING BRAKE
Summary: CONSUMER NOTICED THAT WHEN APPLYING EMERGENCY BRAKES PEDAL GOES ALL THE WAY TO THE FLOOR, IT IS SOFT. DEALERSHIP IS AWARE OF PROBLEM.*AK THE DEALER TRIED TO FIX THE FAILING EMERGENCY BRAKE BUT WAS UNABLE TO SOLVE THE PROBLEM. THE MANUFACTURING DEFECT WAS THE CAUSE. *YH

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2000-09-01

TIRES PROBLEM

Date Of Incident: 2000-05-15
VIN: 2GTEK19T8X1
Components: TIRES
Summary: WHILE DRIVING, CONSUMER HEARD NOISE AND TEMPORARILY LOST CONTROL, RIGHT REAR FIRESTONE WILDERNESS AT TIRE P265/75R16 EXPERIENCED TREAD SEPARATION, DOT VN73. *SLC

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1999-12-29

STRUCTURE PROBLEM

Date Of Incident: 1999-11-26
Components: STRUCTURE
Summary: THE MAIN FRAME OF THE TRUCK CRACKED OVER THE REAR AXLE ON BOTH SIDES. OWNER NOTICED THE FRAME WAS CRACKED WHILE CHANGING THE OIL. THE PROBLEM WAS REPORTED TO THE DEALERSHIP. PROBLEM HAS NOT BEEN CORRECTED. PLEASE PROVIDE ANY FURTHER DETAILS*AK.

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Additional sources

More sources of information about 1999 Gmc Z-71 problems:

2004 GMC Sierra common problems | Great Lakes 4x4. The largest ...

https://www.greatlakes4x4.com/threads/2004-gmc-sierra-common-problems.245057/

Sep 6, 2012 ... I have a friend looking at buying an 04 Sierra. It is 4x4 with a 5.3 L with 93000 miles on it. What are some of the common problems that he ...

GMC Sierra 2500HD 2013: Common Problems & Solutions

https://www.justanswer.com/gmc/86bz4-gmc-2500-series-2013-gmc-sierra-2500hd-crewcab-4x4.html

Dec 18, 2013 ... I have a 2013 gmc Sierra 2500hd crewcab 4x4 Z71. When it is cold out. 30degrees or lower. The transmission has a delay - Answered by a ...

common issues with the 5.3L engine? | Chevy Silverado and GMC ...

https://www.silveradosierra.com/threads/common-issues-with-the-5-3l-engine.7959/

Dec 17, 2011 ... Current rides: 2016 Chevy 1500 Silverado. Z71 LT 5.3L 6speed 3.42 gearing. 2018 Chevrolet Camaro SS. (1LE Track Performance Package)

1999 GMC Sierra 1500 5.3L V-8 having problems staying running ...

https://www.justanswer.com/gm/2xpm5-1999-gmc-sierra-1500-v-sputtered-acceleration-pedal-shutdown.html

Dec 29, 2009 ... Now the truck will not start as if it starving for fuel. Truck sputtered, lost complete acceleration control from the pedal and shutdown while ...