1999 Pontiac Grand Prix Engine And Engine Cooling:engine Problems
NHTSA component category: ENGINE AND ENGINE COOLING:ENGINE · data through 07/12/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How engine and engine cooling:engine ranks on this vehicle
Share of the 412 complaints citing each category; one complaint can cite several. Full breakdown on the 1999 Pontiac Grand Prix overview page.
What owners report
“DEALER REPLACED THE ENGINE ON SEPTEMBER 2002. VEHICLE WAS DRIVEN FOR TWO WEEKS AGAIN, ENGINE WAS REPLACED. ON JANUARY 2003, ENGINE WAS REPLACED FOR THE…”NHTSA complaint 10024580 — filed 06/20/2003
“THE VEHICLE STALLED WITHOUT WARNING, WHICH CAUSED THE CONSUMER TO PULL OVER ABRUPTLY.”NHTSA complaint 10019800 — filed 05/14/2003
“FAULTY PLASTIC INTAKE MANIFOLD/ GASKET ON A PONTIAC GRAND PRIX (1999) CAUSED COOLANT LEAKAGE INTO OIL AND CYLINDERS. CAUSED MY CAR TO QUIT ON A…”NHTSA complaint 10014272 — filed 04/11/2003
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Engine And Engine Cooling:engine complaints by year filed
Frequently asked questions
Does the 1999 Pontiac Grand Prix have engine and engine cooling:engine problems?
Engine And Engine Cooling:engine is the #3 most-reported problem area on the 1999 Pontiac Grand Prix: 34 of 412 complaints on file (8.3%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 1999 Pontiac Grand Prix have in total?
412 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 13 involved a crash, 125 involved a fire, 9 reported injuries, and 2 reported deaths.
What does NHTSA's engine and engine cooling:engine category include?
NHTSA assigns each complaint to standard component categories; this page reports the ENGINE AND ENGINE COOLING:ENGINE category exactly as NHTSA defines and records it.
