1999 Pontiac Montana Engine And Engine Cooling:engine Problems

NHTSA component category: ENGINE AND ENGINE COOLING:ENGINE · data through 07/14/2026

31Engine And Engine Cooling:engine complaints

13.2%Of all 235 complaints

#1Most-reported category

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

ENGINE AND ENGINE COOLING:ENGINE31 · 13.2%

ENGINE AND ENGINE COOLING29 · 12.3%

POWER TRAIN:AUTOMATIC TRANSMISSION25 · 10.6%

ENGINE AND ENGINE COOLING:COOLING SYSTEM18 · 7.7%

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE16 · 6.8%

Share of the 235 complaints citing each category; one complaint can cite several. Full breakdown on the 1999 Pontiac Montana overview page.

What owners report

“LOWER INTAKE MANIFOLD GASKET LEAK CAUSING COOLANT/OIL MIX INTERNALLY ON A VEHICLE WITH ONLY 41K. CAUGHT BEFORE CHRISTMAS 900MI TRIP. WOULD HAVE LIKELY CAUSED ENGINE…”NHTSA complaint 10000696 — filed 01/02/2003

“CAMSHAFT BROKE WHILE CONSUMER WAS DRIVING, CAUSING VEHICLE TO STALL OUT. CONTACTED DEALER.”NHTSA complaint 8012054 — filed 06/18/2002

“VEHICLE OVERHEATED WHILE DRIVING 30 MPH. THE DEALER DETERMINED THAT THE LOWER INTAKE GASKET NEED TO BE REPLACED. PER DEALER 30000 OF THESE PARTS ARE…”NHTSA complaint 8010393 — filed 05/23/2002

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 Montana have engine and engine cooling:engine problems?

Engine And Engine Cooling:engine is the most-reported problem area on the 1999 Pontiac Montana: 31 of 235 complaints on file (13.2%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 1999 Pontiac Montana have in total?

235 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 16 involved a crash, 2 involved a fire, 18 reported injuries, and 1 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.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/14/2026.