1999 GMC Envoy Equipment Problems
- Complaints
- 1about this part
- Share
- 11%of 9 total for the year
- Median mileage
- 57,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the equipment of the 1999 GMC Envoy, 11% of the 9 complaints for this model year. Where a mileage was given, the median is 57,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I have had to replace the heater core 5 times. The first time was 1 month after I purchased the jimmy used at reedmans auto world in pa. 2 months after that it was replaced again 6 months later and every winter since. I have heard there was a ionic problem with the jimmys that send and electrical current the motor, causing the heater cores to just eat away causing them to be replace. I have also had the upper and lower ball joints replace since I have had the jimmy( they were also replaced by the original owner. …”
NHTSA complaint #10195214, filed 2007-07, 57,000 milesRelated service bulletins
- 10232287Feb 21, 2023This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
- 10168979Nov 22, 2019This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the…
- 10166638Sep 18, 2019This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
- 10165876Sep 5, 2019This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the…
- 10154641Feb 15, 2019This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
- 10141381May 31, 2018This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock. Technician will use the radio to get the…
- 10157018Sep 20, 2017This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester…
- 10138060Mar 15, 2017This warranty administration bulletin provides policy information with the field action courtesy transportation policy.
- 10082506Aug 26, 2016This technical bulletin provides a procedure to reprogram the media disc player with the latest calibrations to correct a condition of the rear entertainment system not operating…
- 10114947Dec 4, 2015This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the…
Equipment: other model years
Other parts of the 1999 GMC Envoy
3 complaintsTransmission and drivetrain
2 complaintsElectrical system
1 complaintsEngine cooling
1 complaintsExterior lighting
1 complaintsBody and structure
1 complaintsTires
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 1999 GMC Envoy
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology